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15 December, 00:09

Completely factor each of the given polynomials. If a polynomial cannot be factored, write "not factorable."

22.) 4x^2 + 23x+15

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  1. 15 December, 00:27
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    4x^2+23x+15=0

    Δ=23^2-4*4*15=529-240=289

    x1 = (-23+17) / 8=-6/8 = - 3/4

    x2 = (-23-17) / 8=-5

    4x^2+23x+15 = 4 (x+3/4) (x+5) = (4x+3) (x+5)
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