(3x+5)²+(3x-5)² what is the answer
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the answer in the photo
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(3x+5)²+(3x-5)²
=(9x^2+30x^2+25) +( 9x^2-30x^2+25)
= 9x^2 +25 +9x^2 + 25
= 18x^2 +50
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