document.write( "Question 1048957: The length of a rectangle is 8 cm more than its width. If the length is decreased by 9 and the width is tripled, the area is increased by 50%. What was the area of the original triangle?
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #664528 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
What was the area of the original - did you mean to say, RECTANGLE?\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"L=w%2B8\"
\n" ); document.write( "\"wL=A\", original area\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Changed rectangle, \"%28L-9%29%283w%29=%283%2F2%29A\", the 50% area increase.
\n" ); document.write( "-
\n" ); document.write( "\"3wL-27w=%283%2F2%29A\"
\n" ); document.write( "\"3A-27w=%283%2F2%29A\"
\n" ); document.write( "\"3A-%283%2F2%29A=27w\"
\n" ); document.write( "\"A-%28A%2F2%29=27w\"
\n" ); document.write( "\"A%2F2=27w\"
\n" ); document.write( "\"highlight_green%28A=54w%29\"-------steps might be not the best path, but this equation is still useful.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Re-substitute for A.
\n" ); document.write( "\"wL=54w\"
\n" ); document.write( "\"%28L%2B8%29L=54%28L-8%29\"------substituted for w;
\n" ); document.write( "\"L%5E2%2B8L=54L-54%2A8\"
\n" ); document.write( "\"L%5E2%2B8L-54L%2B54%2A8=0\"
\n" ); document.write( "\"L%5E2-46L%2B8%2A54=0\"
\n" ); document.write( "-
\n" ); document.write( "Maybe the constant term is better factorable.
\n" ); document.write( "\"8%2A54=2%2A2%2A2%2A27%2A2=2%2A2%2A2%2A2%2A3%2A3%2A3\"-----or maybe this not too useful yet.\r
\n" ); document.write( "\n" ); document.write( "-
\n" ); document.write( "\"L=%2846%2B-+sqrt%2846%5E2-4%2A8%2A54%29%29%2F2\"-----general solution of quadratic formula;
\n" ); document.write( "\"L=%2846%2B-+sqrt%28388%29%29%2F2\"
\n" ); document.write( "\"L=L=46%2B-+sqrt%284%2A97%29%29%2F2\"
\n" ); document.write( "\"L=%2846%2B-+2%2Asqrt%2897%29%29%2F2\"
\n" ); document.write( "\"L=23%2B-+sqrt%2897%29\"---------97 is a prime number.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Approx, \"L=23%2B-+9.849\", and \"w=23%2B-+9.849-8\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "If taking the PLUS form of L,
\n" ); document.write( "\"system%28L=32.9849%2Cw=24.849%29\"
\n" ); document.write( "Original area, 820\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "If taking the MINUS form of L,
\n" ); document.write( "\"system%28L=13.151%2Cw=5.151%29\"
\n" ); document.write( "Original area, 68
\n" ); document.write( "
\n" );