contestada

ax2 + bx + c
Factor the trinomial 7x2 – 3x – 4.
Which pair of numbers has a product of ac and a sum
of b?
ac
What is the factored form of the trinomial?

Respuesta :

Shraviya25

Answer: (7x + 4)(x - 1)

Step-by-step explanation:

7x^2 - 3x - 4

ax^2 = 7x^2

bx = -3x

c = - 4

4 x -7  =  -28

4 + -7  =  -3

4 and -7 are the number which ahs the product of ac = -28 and b = -3.

factored form : [tex]7x^{2} - 7x + 4x - 4[/tex]

                      = [tex]7x(x - 1) + 4(x - 1)[/tex]

                      = [tex](7x + 4)(x - 1)[/tex]

madison64920

Answer:

1. -7 and 4

2. (7x + 4)(x - 1)

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