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What is completing Square maithod |
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Answer» Completing the Square is a method used to solve aquadratic equationby changing the form of the equation so that the left side is aperfect squaretrinomial. To solveax2+bx+c=0by completing the square: 1. Transform the equation so that the constant term,c, is alone on the right side. 2. Ifa, the leading coefficient (the coefficient of thex2term), is not equal to1, divide both sides bya. 3. Add the square of half the coefficient of thex-term,(b2a)2to both sides of the equation. 4. Factor the left side as the square of a binomial. 5. Take thesquare rootof both sides. (Remember:(x+q)2=ris equivalent tox+q=±r.) 6. Solve forx. |
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