The vertex form of the equation of a parabola is y = 2(x + 3)2 - 5. What is the standard form of the equation?

A. x = 2y2 + 5y + 9
B. y = 2x2 + 5x + 9
C. y = 4x2 + 4x + 4
D. y = 2x2 + 12x + 13

pic - http://i.imgur.com/3iAk4B5.png

Question

The vertex form of the equation of a parabola is y = 2(x + 3)2 - 5. What is the standard form of the equation?

 A. 	x = 2y2 + 5y + 9
 B. 	y = 2x2 + 5x + 9
 C. 	y = 4x2 + 4x + 4
 D. 	y = 2x2 + 12x + 13

pic - http://i.imgur.com/3iAk4B5.png

phi · Answer

can you multiply out (x_3)^2 = (x+3)(x+3) ?

phi · Answer

*(x+3)^2= (x+3)(x+3)

anonymous · Answer

i don't have calculator ;)

phi · Answer

you don't use a calculator (especially when you multiply letters)

do you know FOIL ?

anonymous · Answer

my fri taught me about FOIL this morning but i forgot.