Posted by Lynn on Tuesday, November 15, 2011 at 1:36am.
Find the vertex of the graph of
f(x)=2x^2+8x+6

Math  Reiny, Tuesday, November 15, 2011 at 8:17am
f(x) = 2(x^2 + 4x + 4  4) + 6
= 2(x+2)^2  4) + 6
= 2(x+2)^2 2
take it from here