SOLUTION: Solve by factoring {{{15y^2+15-50y+20=0}}}

Question 1129770: Solve by factoring

Answer by 4198181(13) (Show Source): You can put this solution on YOUR website!

Use the a c method
What 2 numbers have a sum of ac and add to equal b?
ac=21
b=-10
-7,-3
Then put the 2 numbers over c and simplify if possible.
,
-1,
Put it into the equation and remember to always bring the negative to the middle,
5[(1y-1) (3y-7)]=0
1y-1=0, y=1
3y-7=0, 3y=7, y=
So the answer is
y=1 and y=
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