SOLUTION: What is the vertex and equation of symmetry of F(x)= 2x^2+6x+8

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Question 1138648: What is the vertex and equation of symmetry of F(x)= 2x^2+6x+8
Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!

the vertex and equation of symmetry of
to find the vertex write equation in the vertex form: where and are and coordinates of the vertex
.......group and complete square


.......->(recall is equal to half of the coefficient of variable )






=> and ; so, vertex is at (,)

Axis of Symmetry for is :
which is vertical line that passes through coordinate of the vertex; in your case, axis of symmetry is





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