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thatjacksonguy
 3 years ago
write the equation y=x^23x in vertex form. What is the vertex and the axis of symmetry?
thatjacksonguy
 3 years ago
write the equation y=x^23x in vertex form. What is the vertex and the axis of symmetry?

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Mertsj
 3 years ago
Best ResponseYou've already chosen the best response.1You need to complete the square.

Mertsj
 3 years ago
Best ResponseYou've already chosen the best response.1First factor out the negative 1

thatjacksonguy
 3 years ago
Best ResponseYou've already chosen the best response.0thats what i dont know how to do

Mertsj
 3 years ago
Best ResponseYou've already chosen the best response.1Take 1/2 of the coefficient of x and square it. Add that to the x^2 and x term (which is really subtracting it since there is a minus sign outside the parentheses) so then add it again.

Mertsj
 3 years ago
Best ResponseYou've already chosen the best response.1There is an alternate way that might be easier. The x coordinate of the vertex is b/2a. Calculate that then plug it back in to find the y coordinate. The axis of symmetry is the vertical line that goes through the vertex.

thatjacksonguy
 3 years ago
Best ResponseYou've already chosen the best response.0ill try them both thanx again,,, looks like your saving my life tonight XD
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