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6 March, 03:54

Find the roots of the equation: y=4 (X+4) ^2 - 12

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  1. 6 March, 07:13
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    0=4 (x²+8x+16) - 12

    0=4x²+32x+64-12

    0=4x²+32x+52

    0=x²+8x+13

    D=b²-4ac

    D=64-52=12

    x = (-b-√D) / 2a

    x = (-b+√D) / 2a

    x = (-8-2√3) / 2 = (-2 (4+√3)) / 2 = - (4+√3)

    AND

    x = (-8+2√3) / 2=-2 (4-√3) / 2 = - (4-√3)
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