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8 December, 16:22

What are the solutions to 7x^2+10x-3=x^2+3x

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  1. 8 December, 16:23
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    x = 1 / 3

    x = - 1.5

    Step-by-step explanation:

    First move everything onto one side.

    6x^2 + 7x - 3 = 0

    Divide by 6:

    x^2 + 7/6x - 0.5 = 0

    Now, you can move the 0.5 to the other side because it is determined that this is not factorable.

    x^2 + 7/6x = 0.5

    Now you have to complete the square.

    Take 1 / 2 of 7 / 6 and square it.

    49 / 144

    x^2 + 7/6x + 49/144 = 0.5 + 49/144

    (x + 7 / 12) ^2 = 121 / 144

    Square root:

    x + 7 / 12 = ±11 / 12

    x = 1 / 3, x = - 1.5
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