SOLUTION: how do you solve?
4x^2-16=0
Algebra.Com
Question 144978This question is from textbook Elementary and Intermediate Algebra for College Students
: how do you solve?
4x^2-16=0
This question is from textbook Elementary and Intermediate Algebra for College Students
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given equation
Factor out the GCF 4
Factor the left side using the difference of squares formula
Now set each factor equal to zero:
or
or Now solve for x in each case
So our answers are
or
Notice if we graph we can see that the roots are and . So this visually verifies our answer.
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