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Solve the quadratic equation by using the square root property. (x−6)^2=9 Enter the exact answers.

1 Answer

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We have that the quadratic expression is given by:


(x-6)^2=9

If we apply the square root to both sides of the equation, we have:


\sqrt[]{(x-6)^2}=\pm\sqrt[]{9}

As we can see, we will have two solutions. Then, we have:


(x-6)=\pm3_{}

Then, we have the two possible solutions as follows:


x-6=3,x-6=-3

And we need to solve for both of them as follows:

First case

1. We need to add 6 to both sides of the equation:


x-6=3\Rightarrow x-6+6=3+6\Rightarrow x=9

Second case

2. We need to add 6 to both sides of the equation:


x-6=-3\Rightarrow x-6+6=-3+6\Rightarrow x=3_{}

Therefore, in summary, the exact answers are x = 9, and x = 3.

User Merrill Cook
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