Question

Please explain how to completely factor 3x2 − 3x − 60

Answer 1

First factor out the Greatest Common Factor.
3x2 − 3x − 60
3(x^2-x-20)
then factor your polynomial
what to factor of 20 will subtract to -1
5 and 4
(x-5)(x+4)
i know that 5 is negative because the middle term is negative so the larger factor is negative.
so completely factored it is 3(x-5)(x+4)

Answer 2

thnks

Answer 3

i meant: what factor of 20 will subtract to -1?

Answer 4

5- 4

Answer 5

4-5 i mean

Answer 6

i meant the numbers that add to to -1 are -5 and 4
-5+4 =-1

Answer 7

-5 times 4 is equal to -20(the last term)