3 years ago

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

1 answer:

4 0

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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