SOLUTION: Solve by completing the square: x^2+4x=7

Algebra.Com
Question 361804: Solve by completing the square:
x^2+4x=7
Answer by solver91311(24713)   (Show Source): You can put this solution on YOUR website!




Divide the coefficient on the 1st degree term by 2, square the result, then add that result to both sides.



Factor the perfect square trinomial in the LHS:



Take the square root of both sides:



Add the opposite of the constant term in the LHS to both sides:



John

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