document.write( "Question 92081: I need help solving this problem. this is the work i did so far: \r
\n" ); document.write( "\n" ); document.write( "there is a triangle on one side there is (x-2) the other side is (x-4) and the longest side is 10.\r
\n" ); document.write( "\n" ); document.write( "(x-2)^2+ (x-4)^2= 10^2
\n" ); document.write( "(x-2)(x-2)+ (x-4)(x-4)= 100
\n" ); document.write( "x^2 + -2x + -2x + 4 + x^2 + -4x + -4x + 16
\n" ); document.write( "2x^2 + -12x + 20 = 100 \r
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Algebra.Com's Answer #66918 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
I'll pick up where you left off (your steps are correct)\r
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\n" ); document.write( "\n" ); document.write( "\"2x%5E2+-12x+%2B+20+=+100+\"\r
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\n" ); document.write( "\n" ); document.write( "\"2x%5E2+-12x+%2B+20+-+100=0+\" Subtract 100 from both sides\r
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\n" ); document.write( "\n" ); document.write( "\"2x%5E2+-12x+-80=0+\" Combine like terms\r
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\n" ); document.write( "\n" ); document.write( "Now let's use the quadratic formula to solve for x:\r
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\n" ); document.write( "\n" ); document.write( "Starting with the general quadratic\r
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\n" ); document.write( "\n" ); document.write( "\"ax%5E2%2Bbx%2Bc=0\"\r
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\n" ); document.write( "\n" ); document.write( "the general solution using the quadratic equation is:\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29\"\r
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\n" ); document.write( "\n" ); document.write( "So lets solve \"2%2Ax%5E2-12%2Ax-80=0\" ( notice \"a=2\", \"b=-12\", and \"c=-80\")\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28--12+%2B-+sqrt%28+%28-12%29%5E2-4%2A2%2A-80+%29%29%2F%282%2A2%29\" Plug in a=2, b=-12, and c=-80\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2812+%2B-+sqrt%28+%28-12%29%5E2-4%2A2%2A-80+%29%29%2F%282%2A2%29\" Negate -12 to get 12\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2812+%2B-+sqrt%28+144-4%2A2%2A-80+%29%29%2F%282%2A2%29\" Square -12 to get 144 (note: remember when you square -12, you must square the negative as well. This is because \"%28-12%29%5E2=-12%2A-12=144\".)\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2812+%2B-+sqrt%28+144%2B640+%29%29%2F%282%2A2%29\" Multiply \"-4%2A-80%2A2\" to get \"640\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2812+%2B-+sqrt%28+784+%29%29%2F%282%2A2%29\" Combine like terms in the radicand (everything under the square root)\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2812+%2B-+28%29%2F%282%2A2%29\" Simplify the square root (note: If you need help with simplifying the square root, check out this solver)\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2812+%2B-+28%29%2F4\" Multiply 2 and 2 to get 4\r
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\n" ); document.write( "\n" ); document.write( "So now the expression breaks down into two parts\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2812+%2B+28%29%2F4\" or \"x+=+%2812+-+28%29%2F4\"\r
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\n" ); document.write( "\n" ); document.write( "Lets look at the first part:\r
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\n" ); document.write( "\n" ); document.write( "\"x=%2812+%2B+28%29%2F4\"\r
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\n" ); document.write( "\n" ); document.write( "\"x=40%2F4\" Add the terms in the numerator\r
\n" ); document.write( "\n" ); document.write( "\"x=10\" Divide\r
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\n" ); document.write( "\n" ); document.write( "So one answer is\r
\n" ); document.write( "\n" ); document.write( "\"x=10\"\r
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\n" ); document.write( "\n" ); document.write( "Now lets look at the second part:\r
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\n" ); document.write( "\n" ); document.write( "\"x=%2812+-+28%29%2F4\"\r
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\n" ); document.write( "\n" ); document.write( "\"x=-16%2F4\" Subtract the terms in the numerator\r
\n" ); document.write( "\n" ); document.write( "\"x=-4\" Divide\r
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\n" ); document.write( "\n" ); document.write( "So another answer is\r
\n" ); document.write( "\n" ); document.write( "\"x=-4\"\r
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\n" ); document.write( "\n" ); document.write( "So our possible solutions are:\r
\n" ); document.write( "\n" ); document.write( "\"x=10\" or \"x=-4\"\r
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\n" ); document.write( "\n" ); document.write( "Now lets find each of the leg's lengths:\r
\n" ); document.write( "\n" ); document.write( "Leg A:
\n" ); document.write( "\"10-2=8\" Plug in x=10\r
\n" ); document.write( "\n" ); document.write( "\"-4-2=-6\" Plug in x=-4\r
\n" ); document.write( "\n" ); document.write( "Since a negative length doesn't make sense, the solution x=-4 must be discarded\r
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\n" ); document.write( "\n" ); document.write( "Leg B:
\n" ); document.write( "\"10-4=6\" Plug in x=10\r
\n" ); document.write( "\n" ); document.write( "\"-4-4=-8\" Plug in x=-4\r
\n" ); document.write( "\n" ); document.write( "Since a negative length doesn't make sense, the solution x=-4 must be discarded\r
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\n" ); document.write( "\n" ); document.write( "So the only solution is \r
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\n" ); document.write( "\n" ); document.write( "\"x=10\" where the lengths of the legs are 8 and 6 (or 6 and 8)
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