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I need some math help please?

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Find the perfect square trinomial whose first two terms are given.

x^2-12x

r^2+3r

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  1. 1. x^2 - 12x

    Take the coefficient of x, divide it by 2, and square it.

    -12/2 = -6

    (-6)^2 = 36

    2. r^2 + 3r

    Take the coefficient of r, divide it by 2, and square it.

    3/2

    (3/2) = 9/4

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