Find the product of (5a-3b)power2
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(5a-3b)^2 = 25a^2+9b^2-30ab
(5a-3b)^2
=(a-b)^2 = a^2+b^2- 2ab
=5^2×a^2 + 3^2×b^2 - 2×5a×3b
=25a^2+9b^2-30ab
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