Question

Factor the trinomial:
4u^2+4u-15

Answer 1

ok... here is my method

for a quadratic ax^2 + bx + c = 0

multiply a and c

in this question its 4 times - 15 = -60

what are the factors of - 60 that add to 4....... 10 and - 6


when write the factored form all over the value of a

find common factors in each binomial and cancel with the denominator



so the factored form is

(2u + 5)(2u - 3)

Answer 2

Beautiful! Thank you.

Answer 3

hope it helps..

Answer 4

Very Much. I get lost on the 4th line down.

Answer 5

Does the same work with grouping?