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]
