SOLUTION: find each common solution algebraically. express irrational roots in simplest radical form. y= x^2 - 2x y= 3x

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: find each common solution algebraically. express irrational roots in simplest radical form. y= x^2 - 2x y= 3x      Log On


   

Question 729304: find each common solution algebraically. express irrational roots in simplest radical form.
y= x^2 - 2x
y= 3x
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
You show two equations using two unknown variables. Easiest to start is substitute for y into the first equation and solve for x.

3x=x%5E2-2x
x%5E2-2x-3x=0
x%5E2-5x=0
x%28x-5%29=0

x=0 or x=+5.

The original posting was in "Algebra: Trigonometry", but there is no trigonometry needed in what was posted originally.