9x^2+42+49
(Not homework, I only had to prove it was a perfect square trinomial)
(Not homework, I only had to prove it was a perfect square trinomial)
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(3x+7)^2
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Factored: (3x+7)(3x+7) or (3x + 7)squared
Perfect square trinomials can be found by squaring a binomial.
Perfect square trinomials can be found by squaring a binomial.
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9x^2 + 81?
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Should be 42x in middle, I think. Then it would factor into (3x + 7)^2