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24 June, 18:46

In the equation below, what is the value of b? 4 (x-2) ^2-7=ax^2+bx+c

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  1. 24 June, 19:00
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    We have 4 (x^2 - 2x + 4) - 7 = 4x^2 - 8x + 16 - 7 = 4x^2 - 8x + 9;

    So, 4x^2 - 8x + 9 = ax^2+bx+c;

    The value of b is - 8.
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