SOLUTION: use quadratic formula 4/5y^2+1/5y=18/5
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Question 443650
:
use quadratic formula
4/5y^2+1/5y=18/5
Answer by
mananth(16946)
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multiply by 5
we get 4y^2+y-18=0
a= 4 b= 1 c= -18
b^2-4ac=1+288
b^2-4ac=289
sqrt(289)= 17
x1=(-1+17)/8
x1=2
x2=(-1-17)/8
x2= -2.25