document.write( "Question 902111: Please help me!!!\r
\n" ); document.write( "\n" ); document.write( "The area of 10 cm by 25 cm rectangle is doubled by what equal amount must each dimension be increased?\r
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Algebra.Com's Answer #547111 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( "     .
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document.write( "A = (10cm)(25cm) = 250cm^2
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document.write( "Question States***
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document.write( "A = (10cm + x)(25cm + x) = 500cm^2
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document.write( "x^2 + 35x - 500 = 0   (Tossing out the negative solution for unit measure)
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document.write( "Solved by pluggable solver: SOLVE quadratic equation with variable
Quadratic equation  (in our case ) has the following solutons:
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document.write( "  For these solutions to exist, the discriminant  should not be a negative number.
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document.write( "  First, we need to compute the discriminant : .
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document.write( "  
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document.write( "  Discriminant d=3225 is greater than zero. That means that there are two solutions: .
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document.write( "    Quadratic expression  can be factored:
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document.write( "  Again, the answer is: 10.8945417290014, -45.8945417290014.\n" );
document.write( "Here's your graph:
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