Question

formula of (a+b)² and (a-b)²​

Answer 1

Answer:

(a+b) whole square=a square + b square+2ab

(a-b) whole square =a square - b square + 2ab

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Answer 2

(a+b)²

(a+b)² = (a+b)*(a+b)

(a+b)*(a+b) = a² + ab + ba + b²

(a+b)*(a+b) = a² + b² + 2ab

(a+b)² = a² + b² + 2ab

(a-b)²

(a-b)² = (a-b)*(a-b)

(a-b)*(a-b) = a² - ab - ba + b²

(a-b)*(a-b) = a² + b² - 2ab

(a-b)² = a² + b² - 2ab

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