x² - 10x + 25
Step-by-step explanation:
(x - 5)² = (x -5)(x -5)
Simplifying the expression:
x(x -5) -5(x - 5)
x(x) -x(5) -5(x) -5(-5)
Multiplication of same sign gives positive number. Multiplication of opposite signs give negative number.
x²- 5x - 5x + 25
collect like terms:
x² - 10x + 25