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completing the square using quadratic equation. Use x 2 8x to make a perfect square trinomial. 3 x 3 2 7 Factor the expression on the left.
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Then click the button and select Solve by completing the square to compare your answer to Mathways. Step 3 Complete the square on the left side of the equation and balance this by adding the same value to the right side of the equation. Simplify the radical and then solve the two resulting.
Example x 2 8x - 5 0.
Some quadratic expressions can be factored as perfect squares. Factor the perfect square trinomial as a binomial square. Step 3 Complete the square on the left side of the equation and balance this by adding the same value to the right side of the equation. 2 2 x 2 12 2 x 7 2 0 2.
