Question

Which is a factor of 5x2− 15x − 20?

Answer 1

Factor out the greatest common divisor of the coefficients of 5 x^2-15 x-20.
Factor 5 out of 5 x^2-15 x-20:
5 (x^2-3 x-4)
Factor x^2-3 x-4 by finding two numbers whose product is -4 and whose sum is -3.
The factors of -4 that sum to -3 are 1 and -4. So, x^2-3 x-4 = (x+1) (x-4):
then u ll get 5 (x+1) (x-4)

Answer 2

learn to do it its simple