Question

(x minus 9) (x plus 2) use suitable identity​

Answer 1

Answer:

x^2-7x-18

Step-by-step explanation:

using the identity:-(x+a)(x+b)= x^2+(a+b)x+ab

(x-9)(x+2)=x^2+(-9+2)x+{-9×2}

=x^2+(-7)x+(-18)

=x^2-7x-18