SOLUTION: how would you find the coordinates of the vertex of the graph y=2x(sqared by 2)+4x-2

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Question 422550: how would you find the coordinates of the vertex of the graph y=2x(sqared by 2)+4x-2
Answer by Gogonati(855) About Me  (Show Source):
You can put this solution on YOUR website!
The function y=+2x%5E2%2B4x-2 is a parabola As we know the coordinates of the vertex are:
+x=+-b%2F2a+=+-4%2F2%282%29, { x =-1 } and
y+=2%2A%28-1%29%5E2%2B4%2A%28-1%29-2 , {y = -4}
The vertex of parabola is the point (-1, -4)
graph%28+400%2C+400%2C+-5%2C+5%2C+-5%2C+5%2C+2x%5E2%2B4x-2%29.