SOLUTION: What is the vertex of the graph of y=2(x-3)(x+1) What is the vertex of the graph of y=2x²+8x-3

Algebra ->  Graphs -> SOLUTION: What is the vertex of the graph of y=2(x-3)(x+1) What is the vertex of the graph of y=2x²+8x-3      Log On


   

Question 173213: What is the vertex of the graph of y=2(x-3)(x+1)

What is the vertex of the graph of y=2x²+8x-3
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
you have to complete the square.
:
y=2%28x%5E2%2B8x%2B16%29-3-32 added 16(2)...so had to subtract 32 outside the parenthesis
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y=2%28x%2B4%29%5E2-35 this in vertex form (h,k) is the vertex
:
vertex is at (-4,-35)