Question

Factorize the following:
20x³ − 40x² + 80x

Answer 1

The greatest common factor of the terms 20x³​, -40x²​ and 80x​ of the expression 20x³ - 40x² + 80x​ is 20x.
Now,
20x³​ = 20x X  x²
-40x²​ = 20x X -2x
and
80x ​= 20x X 4

Hence, the expression 20x³ - 40x² + 80x​ ​can be factorised as 20x(x² - 2x + 4)​.