Question

2x^3-7x^2+13x-5 ai giúp với ạ

Answer 1

\(X=\dfrac{1}{2}\)

\(X=-\dfrac{\sqrt{11i-3}}{2}\) 

\(X=\dfrac{\sqrt{11i-3}}{2}\)

Answer 2

\(2x^3-7x^2+13x-5\)

\(=2x^3-x^2-6x^2+3x+10x-5\)

\(=x^2\left(2x-1\right)-3x\left(2x-1\right)+5\left(2x-1\right)\)

\(=\left(2x-1\right)\left(x^2-3x+5\right)\)