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Example 8 : Find the roots of the equation 5r - 6x - 2 = 0 by the method of completingthe square. |
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Answer» 5x^2-6x-2=x^2-6/5x-2/5=x^2-2(3/5)x-2/5=x^2-2(3/5)x+(3/5)^2-(3/5)^2-2/3=(x-3/5)^2-9/23-2/5=(x-3/6)^2=14/25;; (x-3/5)=V14/5; x=3+-V19/5 |
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