please show me what steps will solve this equation

Mathematics
Tutor: None Selected Time limit: 1 Day

2r^3+6r^2=20r

Nov 24th, 2014

2r^3 + 6r^2= 20r

take r common

r(2r^2 + 6r ) = 20r

cancel r from both side

2r^2 + 6r = 20

divide by 2 both side

r^2 + 3r =10 final answer.


Nov 24th, 2014

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