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  • 3 years ago

please help! write trinomial as a perfect square. x^2+18x+81

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  1. mark_o.
    • 3 years ago
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    .x^2+18x+81 what makes 81 equal to if you sqrt them? also what same number you add to make 18? isnt it 9x9=81 and 9+9=18? (x+---? )(x+--?) =x^2+18x+81

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