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Hat value is needed to fill in the blank to make this trinomial a perfect square trinomial. 4x2 + __x + 81?
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Hat value is needed to fill in the blank to make this trinomial a perfect square trinomial. 4x2 + __x + 81?

User NcXNaV
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1 Answer

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36, because the square root of 4 is 2 and the square root of 81 is 9. You multiply those and then double it to get 36.
User Christophetd
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