Problem

Find the vertex form of the parabola given by the equation y=2x212x+20.

Answer

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Answer

Simplify to find the vertex form: y=2(x3)218+20=2(x3)2+2.

Steps

Step 1 :Rewrite the equation in the form y=a(xh)2+k.

Step 2 :Factor out the leading coefficient from the first two terms: y=2(x26x)+20.

Step 3 :Complete the square on the x terms: y=2[(x3)29]+20.

Step 4 :Simplify to find the vertex form: y=2(x3)218+20=2(x3)2+2.

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