Question

16(a-b) square - 9(a+b)square​

Answer 1

HeRe Is Your Ans ⤵

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Identity :-

(A + B)² = A² + B² + 2AB

(A - B)² = A² + B² - 2AB

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$= > 16 {(a - b)}^{2} - 9 {(a + b)}^{2} \\ \\ = > {(16a - 16b)}^{2} - {(9a + 9b)}^{2} \\ \\ = 256 {a}^{2} + 81 {b}^{2} - 162ab - 81 {a}^{2} + 8 {b}^{2} - 162ab \\ \\ = > 175 {a}^{2} + 175 {b}^{2} - 674ab$

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