Answers FL-1200710-Mathematics for College Algebra A Solving Quadratic Equations: Completing the SquareQuestion 81957

81957

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Solving Quadratic Equations: Completing the Square

Question 81957 of 5 • FL-1200710-Mathematics for College Algebra A

Solve x2 + 12x = –20 by completing the square.

Answer

Add to both sides of the equation. The value of in this equation is .:

36

Write the left side of the equation as a binomial squared. The left side of the equation becomes ()2.:

x + 6

Isolate the variable: x =:

–10 or –2

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Solve x2 + 12x = –20 by completing the square.