SOLUTION: factor the quadratic expression completely, and find the roots of the expression. 20x^2 + 13x + 2

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: factor the quadratic expression completely, and find the roots of the expression. 20x^2 + 13x + 2      Log On


   

Question 36107: factor the quadratic expression completely, and find the roots of the expression.
20x^2 + 13x + 2
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
I can factor it but you CANNOT find roots of an expression! You can find the roots of an equation or of a function, but unless the problem has an =0, or a y=, you can't solve it!

20x^2 + 13x + 2

By trial and error
(5x + 2)(4x + 1 )

Now if the problem stated was
20x^2 + 13x + 2=0, then you can solve it:
(5x+2)(4x+1) = 0
5x%2B+2=+0 or 4x%2B1=0
5x=+-2 or 4x+=+-1
x=+-2%2F5 or +x=+-1%2F4

R^2 at SCC