Posted by sarabeth on Monday, September 13, 2010 at 11:45pm.
4 x^3  4x^2  11x + 6 = 0
Need to solve the equation algebraically

cubic equation solving  drwls, Tuesday, September 14, 2010 at 12:08am
IF there is a rational real root, it is q/p, where p and q are integer factors of the x^3 term and the constant term. Once you have one root (by trial and error), the others can be obtained by solving the quadratic you get by factoring out the first root.
In your case, one of the roots is 2. Divide the cubic by x2 to get the quadratic that will get you the other two roots.
If you are lazy like me and want to peek at the answers, use:
http://www.cubicsolver.com/

11th grade  jordan, Tuesday, September 14, 2010 at 6:35pm
Angle QRS is a straight angle. If a=2c, c=2b, and b=d/3, what are the values of a,b,c,and d? a+b+c+d = 180
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