document.write( "Question 91725: Can I get help with this one too: solve by completing the square
\n" ); document.write( "2x^2=2x+15
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\n" ); document.write( "b. 1 +or- square root 31
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\n" ); document.write( "c. 2 +or- square root 22
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Algebra.Com's Answer #66623 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
2x^2=2x+15 ... 2x^2-2x-15=0\r
\n" ); document.write( "\n" ); document.write( "completing the square - step-by-step ... for ax^2+bx+c=0\r
\n" ); document.write( "\n" ); document.write( "1) by dividing or multiplying, set the coefficient of the squared term equal to one ... x^2+(b/a)x+(c/a)=0\r
\n" ); document.write( "\n" ); document.write( "2) by adding or subtracting, set the constant term (c/a) equal to zero ... x^2+(b/a)x=-(c/a)\r
\n" ); document.write( "\n" ); document.write( "3) add the square of one half of the x coefficient to both sides ... x^2+(b/a)x+(b/(2a))^2=-(c/a)+(b/(2a))^2\r
\n" ); document.write( "\n" ); document.write( "4) take the square root of both sides ... \"x%2B%28b%2F%282a%29%29=sqrt%28%28b%5E2-4ac%29%2F%284a%5E2%29%29\" , realizing the root is positive AND negative\r
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\n" ); document.write( "\n" ); document.write( "x-(1/2)=\"sqrt%2831%29%2F2\" ... answer (b)
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