Answer :
Answer:
4x^2 + 19x - 63
Step-by-step explanation:
3(x-3) = 3x - 9
x + 3x - 9 (x + 7)
(4x -9)(x + 7) = 4x(x) + 4x(7) - 9x - 9(7)
4x^2 + 19x - 63
Answer:
4x^2 + 19x - 63
Step-by-step explanation:
3(x-3) = 3x - 9
x + 3x - 9 (x + 7)
(4x -9)(x + 7) = 4x(x) + 4x(7) - 9x - 9(7)
4x^2 + 19x - 63