Answer/Step-by-step explanation:
a. x(x - 3) + 2(x - 3)
x*x + x*-3 + 2x + 2*-3 (distributive property)
x² - 3x + 2x - 6
Add like terms
x² - x - 6
b. 2x(x - 4) -3(x - 4)
2x*x + 2x*-4 -3*x -3*-4 (distributive property)
2x² - 8x - 3x + 12
Add like terms
2x² - 11x + 12
c. x(x - 2) + 2(x - 2)
x*x + x*-2 + 2*x + 2*-2 (distributive property)
x² - 2x + 2x - 4
Add like terms
x² - 0 - 4
x² - 4
