K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Các câu hỏi dưới đây có thể giống với câu hỏi trên
HT
2
29 tháng 10 2023
ĐKXĐ: x+7>=0
=>x>=-7
\(x^2+\sqrt{x+7}=7\)
=>\(x^2-4-3+\sqrt{x+7}=0\)
=>\(\left(x-2\right)\left(x+2\right)+\sqrt{x+7}-3=0\)
=>\(\left(x-2\right)\left(x+2\right)+\dfrac{x+7-9}{\sqrt{x+7}+3}=0\)
=>\(\left(x-2\right)\left(x+2+\dfrac{1}{\sqrt{x+7}+3}\right)=0\)
=>x-2=0
=>x=2(nhận)
mk......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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..........................................................................................................................................................................................................................................................................................................................................................................................................................................................2k8 :3
bạn có thể vô tìm ở đây
I
I
V
https://olm.vn/hoi-dap#collapseOne
2k4 đến 2k mấy