Question

−10x 2 +70x
factor the expression completely

Answer 1

`-10x^2 + 70 x = 10x(-x + 7)`

Explanation :

`-10x^2 + 70x = -10\cdot x\cdot x + 7 \cdot 10 \cdot x`

'x' and '10' are common in the first and second term. so we take them outside the parenthesis and write the remaining terms inside.

That is, 10 x (-x + 7)