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14 December, 16:41

3x (2x+1) + 4 (2x+1) = ax^2+bx+c In the equation above, a, b, and c are constants. If the equation is true for all values of x, what is the value of b?

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  1. 14 December, 18:24
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    When the left side is expanded, the terms involving x are

    3x + 4 (2x) = 11x

    In order for the equation to be true for all x, the value of b must be the coefficient of x on the left side.

    b = 11.
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