Question
In Exercises 13–24, solve the quadratic equation by factoring.$$9 x^{2}-1=0$$
Step 1
The equation is already in the form of a difference of squares, which can be factored into a sum and difference of the same two terms. So, we can write the equation as follows: $$9x^{2}-1=0 \Rightarrow (3x-1)(3x+1)=0$$ Show more…
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