Question

Multiply 4x+9 by 4x-19

Answer 1

Answer:

$(4x + 9)(4x - 19) \\ = 4x(4x - 19) + 9(4x - 19) \\ = 16 {x}^{2} - 76x + 36x - 171 \\ = 16 {x}^{2} - 40x - 171$

Answer 2

Answer:

16x*2-40x-171

Step-by-step explanation:

{4x+9}X4x   [4x+9]-19

16x^2+36x-76x-171

16x^2-40x-171