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18 November, 09:42

How do you write this polynomial in factored form? x^3+7x^2+10x

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  1. 18 November, 11:55
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    x ∧3 + 7 x ∧ 2 + 10x=x (x+2) (x+5)

    because:

    Step 1:

    After factoring out x we have:

    x3 + 7 x2 + 10x=x (x2 + 7x+10)

    Step 2:

    Polynomial x2 + 7x+10 can be factored in 2 steps.

    step 1: Solve quadratic equation x2 + 7x+10=0 by using step-by-step quadratic equation solver (opens new window).

    The solutions are:

    x1 = - 2

    x2 = - 5

    step2: Use formula for factoring quadratic equation:

    a x2 + bx+c=a (x - x1) (x - x2)

    Where x1 and x2 are solutions of quadratic equation. In our case we have:

    x2 + 7x+10=1 (x - (-2)) (x - (-5)) that is

    x2 + 7x+10 = (x+2) (x+5)
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