(7a+17b)2-(-17a+7b)2
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Answer:
(7a)² + 2×7a×17b + (17b)² + (17a - 7b)²
= 49a² + 238b + 289b² + 289a² - 238b + 49b²
= 49 (a²+b²) + 289(a²+b²)
=338(a²+b²)
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Step-by-step explanation:
I am not writing question direct answer:-
=(7a+17b)(7a+17b) - (- 17a+7b) (- 17a+ 7b)
=7a+7a+- 17a-17a - +17b +17b +7b+ 7b
=14a-34a - +34b+14b
=20a - 48b. Ans:-
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