Question

please answer it step by step​

Answer 1

${(3x + 2y)}^{2} + {(3x - 2y)}^{2}$

$\{9 {x}^{2} + 4 {y}^{2} + 12xy \} + \{9 {x}^{2} + 4 {y}^{2} - 12xy \}$

$= > \: 9 {x}^{2} + 4 {y}^{2} + 9 {x}^{2} + 4 {y}^{2}$

$= > \: 18 {x}^{2} + 8 {y}^{2}$

Answer 2

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