Đặt \(a=x^2+2x-2\)
=> \(x+2=\frac{a+2}{x}\)
pt<=> \(a^2+2a=\frac{a+2}{x}\)
\(a\left(a+2\right)=\frac{a+2}{x}\)
\(\left(a+2\right)\left(a-\frac{1}{x}\right)=0\)
tới đây bạn giải đc rồi nhé
giai phuong trinh:
\(\left(\sqrt{x+4}-2\right)\left(\sqrt{4-x}+2\right)=2x\)
Giai phuong trinh
\(\sqrt{x.\left(x-1\right)}+\sqrt{x\left(x+2\right)}=2x\)
giai phuong trinh : \(2x^2\left(5-\sqrt[3]{5x-x^3}\right)=2x^3+17x-8\)
giai phuong trinh
\(\left(2x-1\right)^2=12\sqrt{x^2-x-2}-1\)
giai phuong trinh \(\sqrt{2x^2+11x+19}+\sqrt{2x^2+5x+7}=3\left(x+2\right)\)
giai phuong trinh \(\sqrt{x^2+2x}-x-1+\frac{2\left(x-1\right)}{\sqrt{x^2+2x}}=0\) (Nguyễn Du BMT 2017 -2018)
giai he phuong trinh sau:\(\hept{\begin{cases}\frac{2x-3}{2y-5}=\frac{3x+1}{3y-4}\\2\left(x-3\right)-3\left(y+2\right)=-16\end{cases}}\)
Giai phuong trinh giup minh 3 cau nay voi
a,\(3x\left(2-\sqrt{4}\right)=3\left(\sqrt{4}x+1\right)\)
b,\(\left(5-x\right).\left(\sqrt{3}+x\right)-5=0.\)
c,\(\left(x^2-2x\right)+\left(-4+8x\right)=0.\)
tim nghiem nguyen cua phuong trinh: \(\left(x^2+1\right)\sqrt{1-x}-\left(2x+x^3\right)\sqrt{x+1}=3x^4\sqrt{2x}\)
