Answer:
A(x) = 2x² - 20x + 110
Step-by-step explanation:
A(x) = 2(x - 5)² - 60
A(x) = 2(x - 5)(x - 5) - 60
A(x) = 2[x(x - 5) - 5(x - 5)] - 60
A(x) = 2[x(x) - x(5) - 5(x) + 5(5)] - 60
A(x) = 2(x² - 5x - 5x + 25) - 60
A(x) = 2(x² - 10x + 25) - 60
A(x) = 2(x²) - 2(10x) + 2(25) - 60
A(x) = 2x² - 20x + 50 + 60
A(x) = 2x² - 20x + 110
Answer:
A(x) = 2x² - 20x - 10
Step-by-step explanation:
A(x) = 2(x - 5)² - 60 ← expand factor using FOIL
= 2(x² - 10x + 25) - 60 ← distribute parenthesis
= 2x² - 20x + 50 - 60 ← collect like terms
= 2x² - 20x - 10
