Multiplying binomials (*+2) (*-9)

x² - 7x - 18

Step-by-step explanation:

In algebra, a binomial consists solely of a sum or subtraction of two monomials.

To solve the multiplication of two binomials we have to multiply term by term and then simplify common terms.

(x + 2) (x - 9) = x (x) + x (-9) + 2 (x) + 2 (-9) = x² - 9x + 2x - 18 = x² - 7x - 18