SOLUTION: What are the solutions of the equation x^2 – 4 = 0? Use a graph of the related function.

Algebra ->  Graphs -> SOLUTION: What are the solutions of the equation x^2 – 4 = 0? Use a graph of the related function.      Log On


   

Question 728605: What are the solutions of the equation x^2 – 4 = 0? Use a graph of the related function.
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2-4+=+0....factor it completely
%28x+-2%29%28x%2B2%29+=+0
solutions:
if x-2+=+0..=>...x+=2
if x%2B2+=+0..=>...x=-2

+graph%28+600%2C+600%2C+-5%2C+5%2C+-5%2C+5%2C+x%5E2-4%29+