Question

Multiply 1.(x-4) (x+9)​

Answer 1

Answer:

x=4 or -9

Step-by-step explanation:

(x-4) (x+9)=x^2+9x-4x-36

=x^2+5x-36

using middle term spilt

x = 4 and x = -9

Answer 2

$x {}^{2} + 9x - 4x - 36 \\ x {}^{2} + 5x - 36$