SOLUTION: Can you please help me solve this equation? I forget the process for this type and there are no examples in my textbook. Thank you. (((21x^+14x=0)))

Algebra ->  Rational-functions -> SOLUTION: Can you please help me solve this equation? I forget the process for this type and there are no examples in my textbook. Thank you. (((21x^+14x=0)))      Log On


   



Question 198506: Can you please help me solve this equation? I forget the process for this type and there are no examples in my textbook. Thank you.
(((21x^+14x=0)))

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Can you please help me solve this equation?
I forget the process for this type and there are no examples in my textbook. Thank you.
:
21x^2 + 14x = 0
:
Factor out 7x
7x(3x + 2) = 0
Two solutions
7x = 0
x = 0
and
3x = -2
x = -2%2F3
:
:
Check solution using x = -2%2F3
21(-2%2F3)^2 + 14(-2%2F3) = 0
21(4%2F9) + 14(-2%2F3) = 0
84%2F9) + (-28%2F3) = 0
84%2F9) + (-84%2F9) = 0