Question

The value of (a + b)² – (a – b)² is​

Answer 1

Step-by-step explanation:

->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 braces we got,

->a² + 2ab + b² - a² +2ab - b²

->2ab+2ab =4ab

->so based on above simplification answer is 4ab .

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Answer 2

Answer:

->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 braces we got,

->a² + 2ab + b² - a² +2ab - b²

->2ab+2ab =4ab

->so based on above simplification answer is 4ab .