document.write( "Question 14834: i have a worded problem that i cannot do. it goes like this:
\n" ); document.write( "A triangles base is x cm and the height is 3cm shorter than the base if the area is 20 what is the value of x.
\n" ); document.write( "I have worked out the answer but i dont know how to get to it.
\n" ); document.write( "please help me
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Algebra.Com's Answer #7611 by rapaljer(4671)\"\" \"About 
You can put this solution on YOUR website!
Let x = base of triangle
\n" ); document.write( "x-3 = height of triangle\r
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\n" ); document.write( "\n" ); document.write( "Area = \"%281%2F2%29%2Ab%2Ah+=+20\"
\n" ); document.write( "\"%281%2F2%29%2Ax%2A%28x-3%29+=+20+\"\r
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\n" ); document.write( "\n" ); document.write( "Multiply both sides by 2 to clear the fraction:
\n" ); document.write( "\"2%2A%281%2F2%29%2Ax%2A%28x-3%29+=+2%2A20\"
\n" ); document.write( "\"x%5E2+-+3x+=+40+\"\r
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\n" ); document.write( "\n" ); document.write( "Quadratic equation, so set equal to zero:
\n" ); document.write( "\"x%5E2+-+3x+-+40+=+0\"
\n" ); document.write( "\"+%28x-8%29%28x%2B5%29+=+0\"
\n" ); document.write( "x=8 base
\n" ); document.write( "x-3= 5 height\r
\n" ); document.write( "\n" ); document.write( "Reject x=-5, since the base of a triangle cannot be negative.\r
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\n" ); document.write( "\n" ); document.write( "R^2 at SCC
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