show that (3x+5)² -60x = (3x-5)²
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Answer:
9x^2 +25 +30x -60x
9x^2 +25 +30x -60x = (3x)^2 + 5^2 -30x
9x^2 +25 +30x -60x = (3x)^2 + 5^2 -30x = (3x-5^2
9x^2 +25 +30x -60x = (3x)^2 + 5^2 -30x = (3x-5^2 (a-b)^2= a^2 + b^2 - 2ab
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