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Verified answer
(a - 5b)²= (a - 5b)(a - 5b)
= a² - 5ab - 5ab + 25b²
= a² - 10ab + 25b²
Verified answer
(a -5b)²a² + 2ab + b²
a² + 2 x a x (-5b) + 25b²
a² - 10ab + 25b²