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26 May, 15:51

How do i complete the square y = X2+8X-4

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  1. 26 May, 19:14
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    For x²+bx+c, to complete the square, you add (half of b) ²

    b=8 in this case, so you add 4², which is 16

    x²+8x+16-16-4

    y = (x+4) ²-20 is the final form.
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