Question

=

${(a + b)}^{2} - (a - b) {}^{2}$
​

Answer 1

Step-by-step explanation:

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

=a square + b square + 2 ab minus a square minus b square + 2 ab

= 4 ab

Answer 2

$\huge\fcolorbox{red}{cyan}{Answer}$

-4ab

Step-by-step explanation:

$[(a+b)² - (a-b)²] \\ => \bf\color{orange}{(x)² - (y)² = (x-y)(x+y)} \\ =>[(a-b)-(a+b)][(a-b)+(a+b)]</p><p> \\ => (a-b-a-b)(a-b+a+b) \\ => (-2b)(2a) \\ => \boxed{ -4ab}$