document.write( "Question 391992: I really don't know about this problem. I'm confused.
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\n" ); document.write( "2x(squared)+5x-8=0 Can you help me? Please and Thank you. :) \n" ); document.write( "
Algebra.Com's Answer #278171 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( "2x^2 + 5x - 8 = 0 Note: the use of the ^ (upper case 6)
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document.write( "completing the square
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document.write( "2(x^2 + 5/2x) - 8 = 0
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document.write( "2[(x +5/4)^2 - 25/16] - 8 = 0
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document.write( "2(x + 5/4)^2 -25/8 - 8 = 0
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document.write( "2(x + 5/4)^2 -25/8 - 64/8 = 0
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document.write( "2(x + 5/4)^2  = 89/8 
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document.write( " (x+5/4)^2 = 89/16   
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document.write( "  x + 5/4 = ± sqrt(89/16)
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document.write( "      x = -5/4 ± sqrt(89)/4 = (-5 ± sqrt(89))/4\r
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document.write( "Note: solving with Quadratic equation to check our Answer
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document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
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document.write( "\"x+=+%28-5+%2B-+sqrt%2889+%29%29%2F%284%29+\" \n" );
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