How do you write $y = x^{2} + 18 x$ $y=x^2+18x$ in vertex form?

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Answer 1 · 2016-08-18T11:48:53

In Vertex form $y = {(x + 9)}^{2} - 81$ $y=(x+9)^2-81$

$y=x^2+18x=x^2+18x+81-81=(x+9)^2-81:.$ vertex is at $(-9,-81)$ graph{x^2+18x [-160, 160, -80, 80]}[Ans]

How do you write y=x^2+18xy=x2+18xy=x^2+18x in vertex form?