\(x^2+2x+5x+10=0\Rightarrow x\left(x+2\right)+5\left(x+2\right)=0\Rightarrow\left(x+5\right)\left(x+2\right)=0\)
=> x = -5 hoặc x = -2
GPT :
\(2x^2+7x+1+\left(2x-1\right)\sqrt{x^2+1}=0\)
GPT: x4 -2x2 +7x-12=0
GPT: \(\left(\sqrt{x+5}-\sqrt{x+2}\right)\left(1+\sqrt{x^2+7x+10}\right)=3\)
GPT:2X^3 -7X^2 +4X+1=0
GPT:
a,\(\left(\sqrt{x+5}-\sqrt{x+2}\right)\left(\sqrt{x^2+7x+10}+1\right)=3\)
b,\(x^2+9x+20=2\sqrt{3x+10}\)
Gpt: \(5x^2+3x+6=\left(7x+1\right)\sqrt{x^2+3}\)
Gpt nghiệm nguyên:
a) \(x^2+x+1=2xy+y\)
b) \(x^4+x^2-y^2+y+10=0\)
GPT: x3+7x2+6x+1=4x2+3x
GPT: \(6x^4+7x^3-16x^2-13x-24=0\)
thanks
