Posted by Shelley on Wednesday, November 24, 2010 at 5:01pm.
Can someone help me explain how factoring is used to solve quadratic equations? I can't find an explaination anywhere.

algebra  Damon, Wednesday, November 24, 2010 at 5:59pm
say for example
x^23x+2 = 0
factor that left side
(x2)(x1) = 0
That tells you that if x = 2, the function is zero, because (22)=0
It also tells you that if x = 1, the function is zero. (11) = 0
so the solution is x = 2 or x = 1
Answer This Question
Related Questions
 Math (Algebra)  Could someone help to explain to me how factoring is used to ...
 Math (Algebra) Repost from July 27, 2010 at 4:13pm  Could someone help to ...
 ALGEBRA  Explain how factoring is used to solve quadratic equations. ...
 Math  Explain how factoring is used to solve quadratic equations. Demonstrate ...
 Algebra  Factor quadratic expressions: 2x^2 + 9x + 4 10x^2 + 70x + 100 Solve ...
 algebra 2  how do you solve quadratic equations by factoring?
 Algebra  Solve the equation. Use factoring or the quadratic formula, whichever ...
 math  please anwer these: 1) how can i multiply and divide polynomials ...
 Pre algebra  How do I solve Quadratic equations by factoring? (for example how ...
 Algebra II  Need help please. Thank you. 1. Determine whether the function has ...
More Related Questions