Question

Factor the trinomial below. Write each factor as a polynomial in descending order.

4x2 + 19x - 5
could someone please do a step by step...

Answer 1

factor by grouping

Answer 2

ac=20, need 2 factors of 20 with different signs that add to 19
4x^2+20x-x-5

Answer 3

ac =- 20

Answer 4

doesn't matter as long as you know they are different signs and add to 19

Answer 5

true

Answer 6

uhm :I alright I'm so lost

Answer 7

factor out common factors in the first 2 terms and the 2nd 2 terms:
4x(x+5)-(x+5)

Answer 8

now you can factor out an (x+5)
(x+5)(4x-1)

Answer 9

thank you :) i get it now.

Answer 10

yw