Solving equations by factoring

[surge21]

I am having such a difficult time with this problem and it seems so simple but I can't get it!

Here's what I got:
0 = 2y^2 - 4y + 2
(2y – 2)(y + 2) {y = 1, y = -2}

Here's the problem:
y^2/30 = y/15 + 1/2

I need a solution set and thus came up with 1 and -2 but i think it's wrong because it doesn't produce an answer of 0 with either one.

 

[Denis]

Here's what I got:
0 = 2y^2 - 4y + 2
(2y – 2)(y + 2) {y = 1, y = -2}

Here's the problem:
y^2/30 = y/15 + 1/2

How in heck did you get what you got? :shock:

y^2/30 = y/15 + 1/2 ; multiply by 30:
y^2 = 2y + 15
y^2 - 2y - 15 = 0
Kapish?

 

[surge21]

HAHAHA, omg i was way off. Thanks alot!

 

[garf]

I have the following roots
for
2y[sup:3nr2ntdd]2[/sup:3nr2ntdd]+4y+2=0
y1=-1
y2=-1

y[sub:3nr2ntdd]2[/sub:3nr2ntdd]-2y-15=0
y1=-3
y2=5