Answer:
x² - 8x + 16
Step-by-step explanation:
Given
(x - 4)(x - 4)
Each term in the second factor is multiplied by each term in the first factor, that is
x(x - 4) - 4(x - 4) ← distribute both parenthesis
= x² - 4x - 4x + 16 ← collect like terms
= x² - 8x + 16
