Anonymous
Anonymous asked in Science & MathematicsMathematics · 1 decade ago

Solve equation for x.?

Solve the following equations for x.

1. 2x^2-2x-24=0

2. (x-3)(x+5)(2x-7)=0

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  • 1 decade ago
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    1: the way my teacher taught me was that when the coefficient for the square, u multiply that by the constant and from there find the numbers that mult. to the middle.

    2x^2+6x-8x-24=0.

    2x(x+3)-8(x+3)

    (2x-8)(x+3)=0. The answer is{4,-3}.

    2: x-3=0

    x+5=0

    2x-7=0.

    the answer is{3,-5,7/2}

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