document.write( "Question 755281: A cube has a surface area of 6x^2+84x+294. I need to find the length of a side. Help..please? \n" ); document.write( "
Algebra.Com's Answer #459568 by nerdybill(7384)\"\" \"About 
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6x^2+84x+294 (surface area of cube)
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\n" ); document.write( "Since there are 6 sides to a cube, each side must have an area of:
\n" ); document.write( "(6x^2+84x+294)6
\n" ); document.write( "x^2+14x+49 (area of each side)
\n" ); document.write( "factoring:
\n" ); document.write( "(x+7)(x+7)
\n" ); document.write( "(x+7)^2
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\n" ); document.write( "therefore:
\n" ); document.write( "x+7 (length of each side)
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