document.write( "Question 408892: Use the method of completing the square to solve the equation 3 = 2x2 + 8x \n" ); document.write( "
Algebra.Com's Answer #287969 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!

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document.write( "Hi
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document.write( "Using the method of completing the square to solve the equation:
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document.write( "2x^2 + 8x = 3    |note the use of the ^ (uppercase 6)
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document.write( "(x^2+4x) = 3/2
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document.write( "(x+2)^2 -4 = 3/2
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document.write( " (x+2)^2 = 11/2
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document.write( "   x+2 = ħ sqrt(5.5)
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document.write( "    x = -2 ħsqrt(5.5)
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document.write( "    x = {0.345207879911715, -4.34520787991172}
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document.write( "CHECKING our Answer*** with the Quadratic Formula
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document.write( "2x^2 + 8x - 3 = 0
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document.write( "\"x+=+%28-b+%2B-+sqrt%2888+%29%29%2F%282%2Aa%29+\"
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document.write( "\"x+=+%28-8+%2B-+sqrt%28+88+%29%29%2F%284%29+\"
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document.write( " x = {0.345207879911715, -4.34520787991172} \n" );
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