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algebra 2

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How would you solve 3x^2+8x-91=0 and 9r^2+4r+2=0 using the quadratic formula?

  • algebra 2 -

    the same way you solve any quadratic. The first is:

    x = [-8±√(8^2-4(3)(-91))]/(2*3)
    = (-8±√1156)/6
    = (-8±34)/6
    = -7,13/3

    solve the other in like wise.

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