Question

x mũ 2 + 6 nhân x- 7

Answer 1

\(x^2+6x-7=x^2-x+7x-7=x\left(x-1\right)+7\left(x-1\right)=\left(x+7\right)\left(x-1\right)\)

Answer 2

\(x^2+6x-7=\left(x+7\right)\left(x-1\right)\)

Answer 3

x² + 6x - 7

<=> x² - x + 7x - 7

<=> x(x - 1) + 7(x - 1)

<=> (x + 7)(x - 1)

Mik ko copy nha