Question

${(a + b)}^ 2 - (a - b)^{2}$= ?​

Answer 1

Answer:

$Es \ 4ab$

Step-by-step explanation:

$\left(a+b\right)^2-\left(a-b\right)^2\\\\a^2+2ab+b^2-\left(a-b\right)^2\\\\a^2+2ab+b^2-\left(a^2-2ab+b^2\right)\\\\a^2+2ab+b^2-a^2+2ab-b^2\\\\4ab$

Answer 2

Step-by-step explanation:

(a+b)

2

−(a−b)

2

= 4

how???? it's simple...

(a+b)

2

−(a−b)

2

a

2

+2ab+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

4ab