Question

How to factorize

a)x³-4x

b) 9t²-u²

hurry up

Answer 1

A) the greatest common factor is how to factors something

for this case x is the gcf

x(x^2 - 4) is the answer

B) Cannot be factored there is no common factor.

Answer 2

a) gcf is x

x(x^3/x - 4x/x)
x(x^2 - 4)
x(x^2 - 2^2)
x(x+2)(x-2)

b) 3t^2 -u^2

(3t+u)(3t-u)