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4-70.

Using the technique of completing the square, solve . Homework Help ✎

See the Math Notes box in Lesson 2.1.4 for help with completing the square. Also see problem 3-117.

What steps were used to obtain this equation?

Now solve the equation.

Take the square root of both sides.

Subtract 6 from both sides.

Simplify your answer.

Since the original equation had an -term, you should try to find 2 solutions.