Question

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I want step by step​

Answer 1

Answer:

1st use the formula of (a+b)(a-b) = asquare -bsquare

2nd use a+bthe whole square = asquare +2ab + bsquare

Answer 2

Answer:

$1. \: (2x + 3y)(2x - 3y) \\ {(2x)}^{2} - {(3y)}^{2} \\ 4 {x}^{2} - 9 {y}^{2}$

$2. \: {(x - \frac{a}{2} )}^{2} \\ {x}^{2} + \frac{ {a}^{2} }{4} - 2(x)( \frac{a}{2} ) \\ {x}^{2} + \frac{ {a}^{2} }{4} \: - \frac{2xa}{2}$

$3. \: {(2m + 1)}^{2} \ \\ {(2m)}^{2} + {(1)}^{2} + 2(2m)(1) \\ 4 {m}^{2} + 1 + 4m$

hope it helps you..

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