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13 March, 13:16

Nick is solving the equation 3x^2=20-7x with the quadratic formula

which values could He use for a, b and c

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  1. 13 March, 15:21
    0
    C. a = 3

    b = 7

    c = - 20

    Step-by-step explanation:

    x = - b+ / - (sq) b^2 - 4ac.

    Well the way to plug the numbers in is by using this equation: Ax^2 + Bx + C = 0

    S if you use your equation : 3x^2 = 20 - 7x

    First you have to move everything to one side.

    So it'll look like this:

    3x^2 = 20 - 7x

    -20 - 20

    3x^2 - 20 = - 7x

    +7x + 7x

    3x^2 - 20 + 7x = 0

    don't forget that ... Ax^2 + Bx + C = 0

    3 = A

    7 = B

    -20 = C
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