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Quinn Patton
Mathematics
31 May, 05:03
What is (81x^2 - 4y^2) square units factored?
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Brynlee Ellis
31 May, 05:26
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To solve, use the difference of squares rule. (a^2-b^2) = (a-b) (a+b). In your equation, your a^2=81x^2 and your b^2=4y^2, making your a=9x and your b=2y. This makes your factored form (9x-2y) (9x+2y).
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