Question

Multiplying (x-5)(x-9)gives

Answer 1

Answer:

x2-5x^2-9x^2-45

x2-4x^2-45

Answer 2

x² - 14x + 45

Step-by-step explanation:

(x-5)(x-9)

(x+a)(x+b) = x² + (a+b)x + ab

(x)² + [(-5)+(-9)] + [(-5)(-9)]

= x² - 14x + 45

therefore,

(x-5)(x-9) = x² - 14x + 45