convert y=2x^2+5x-5 into vertex form

1 answer

2x^2+5x-5

2(x^2 + 5/2 x) - 5
2(x^2 + 5/2 x + (5/4)^2) - 5 - 2(5/4)^2
2(x - 5/4)^2 - 65/8

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