algebra
posted by Shelley .
Can someone help me explain how factoring is used to solve quadratic equations? I can't find an explaination anywhere.

algebra 
Damon
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
Respond to this Question
Similar Questions

algebra 2
how do you solve quadratic equations by factoring? 
Math (Algebra)
Could someone help to explain to me how factoring is used to solve quadratic equations? 
Math (Algebra) Repost from July 27, 2010 at 4:13pm
Could someone help to explain to me how factoring is used to solve quadratic equations? 
Math
Explain how factoring is used to solve quadratic equations. Demonstrate the process with an example. 
ALGEBRA
Explain how factoring is used to solve quadratic equations. Demonstrate the process with an example. 
Pre algebra
How do I solve Quadratic equations by factoring? 
math
please anwer these: 1) how can i multiply and divide polynomials containing radicals? 
Algebra
Solve the equation. Use factoring or the quadratic formula, whichever is appropriate. Try factoring first. If you have any difficulty factoring, then go right to the quadratic formula. (Enter your answers as a commaseparated list.) … 
Algebra
Factor quadratic expressions: 2x^2 + 9x + 4 10x^2 + 70x + 100 Solve quadratic equations by factoring: 2x^2 + 9x + 4 = 0 Solve by taking square roots: (x  5)^2  81 = 0 
Algebra II
Need help please. Thank you. 1. Determine whether the function has a maximum or minimum. State that value. f(x)= 2x^24x 2. Determine what c would in order to complete the square. x^25x+c 3. Solve the quadratic by factoring. 3x^216x+5=0 …