-4x²+17x+15 I have the second step I think?

Question

-4x²+17x+15

-1(4x²-17x-15)

Where do I go from here

Answer 1

What is the question ? !!!!

Factorise ?????

- (4x² - 17x - 15)

- (4x - 3)(x + 5)

PS

Should not have to guess what the question is !!!!!

Answer 2

Factor the trinomial:

-4x^2 + 17x + 15

Reorder the terms:

15 + 17x - 4x^2

(5 - x)(3 +4x)

Using the FOIL Method to multiply:

5 x 3 = 15

5 x 4x = 20x

-x x 3 = -3x

-x x 4x = -4x^2

15 + 20 - 3x - 4x^2

15 + 17x - 4x^2

which is equivalent to:

-4x^2 + 17 + 15

I hope the above explanations and steps will help you understand factoring trinomials. You need to do lots of practice to understand and grasp the concept.

Answer 3

-4x²+17x+15  ---> tThe first step is to divide the whole thing by 4, factor 4 out of it:

x² + 4.25x - 3.75 ----> Now factor it:

( x - .75 ) ( x + 5 )

x=-.75; x=5