SOLUTION: log(base 2)4+log(base 2)(45-2y)=log(base2)y(squared)

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: log(base 2)4+log(base 2)(45-2y)=log(base2)y(squared)      Log On


   

Question 676687: log(base 2)4+log(base 2)(45-2y)=log(base2)y(squared)
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
solve for y
log(base 2)4+log(base 2)(45-2y)=log(base2)y(squared)
log2(4)+log2(45-2y)=log2(y^2)
place under single log
log2[4*(45-2y)]=log(y^2)
4(45-2y)=y^2
180-8y=y^2
y^2+8y-180=0
factor
(y-10)(y+18)=0
y=10
or
y=-18