Math, asked by tk48067p9metv, 1 year ago

factorise a²-4b+2a-b²-3

Answers

Answered by TheRose
1
(2) (a + b)² = (a - b)² + 4 ab ... (3) (a - b)² = a² - 2 ab + b² ... In the terms of the expansion, a², b², c², ab
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