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Factor the equation 81x^2-16y^2
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Factor the equation 81x^2-16y^2

User Oeter
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81x^2-16y^2\\\\= (9x)^(2) - (4x)^(2)\\\\Using\ the\ formula\ a^(2) - b^(2) = (a-b )(a+b) \\\\=\boxed{(9x - 4) ( 9x + 4)\ Answer}
User Stevezkw
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When factored, the exression is (9x + 4y) (9x - 4y)
User Zeljko
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