Question

(iv) (a + b)2 - (a - b)2

EXPLAIN THE STEPS INVOLVED AND FIND THE ANSWER​

Answer 1

Step-by-step explanation:

Here we know that

${a}^{2} + 2ab + {b}^{2} - ( {a}^{2} - 2ab + {b}^{2} )$

now after opening the bracket

we get,

$4ab$

hence the answer is

4ab.....

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Answer 2

Step-by-step explanation:

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

=[a^2+2ab+b^2]-[a^2-2ab+b^2]

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

=2ab+2ab

=4ab