Question

Similify it
(a+b)²-(a-b)²​

Answer 1

(a+b)²-(a-b)²

➜Here, we Have (a+b) ² -(a-b) ²

➜We have equation for(a+b)² = a² + 2ab + b²

➜We have equation for(a-b)² = a² - 2ab + b²

➜So we can use it and we write below step

➜(a² + 2ab + b² )-( a² - 2ab + b² )

➜After open the brackets we got,

➜a² + 2ab + b² - a² +2ab - b²

➜2ab+2ab =4ab

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Answer 2

Answer:

we know that,

(a+b)² = a²+2ab+b²  and  (a-b)² = a²+b²-2ab

Acc to the Ques-

⇒ (a²+2ab+b²)-(a²-2ab+b²)

⇒ a²+2ab+b²-a²+2ab-b²

⇒ 4ab

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