Question

( a+b) ^2-a^2+b^2
solve it​

Answer 1

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

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

+a-a cut reaming +2ab+2ab+b^2+b^2

4ab+b^2 is the answer

Answer 2

`\\ \rm\longmapsto (a+b)^2-a^2+b^2`

`\\ \rm\longmapsto a^2+b^2+2ab-a^2+b^2`

`\\ \rm\longmapsto a^2-a^2+b^2+b^2+2ab`

`\\ \rm\longmapsto 2b^2+2ab`

`\\ \rm\longmapsto 2b(b+a)`