Question

  Tìm x :

 12x² - 6x.( 2x - 1) = 8

Tính :

1/3y⁵ (3y² - 9y +1 )

 

Answer 1

Bài 1 :

Theo đề ta có :

\(12x^2-6x\left(2x-1\right)=8\)

\(\Rightarrow12x^2-\left(12x^2-6x\right)=8\)

\(\Rightarrow12x^2-12x^2+6x=8\)

\(\Rightarrow6x=8\)

\(\Rightarrow x=\frac{8}{6}=\frac{4}{3}\)