Question

(a + b)^2 - (a - b)^2​

Answer 1

Answer:

(a+b)^2 - (a-b)^2

a^2 + 2ab + b^2 - a^2 + 2ab - b^2

4ab

Answer 2

  (a + b)² - (a - b)²

= [(a + b) + (a - b)] [(a + b) - (a - b)]

= (2a)(2b)

= 4ab

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