document.write( "Question 80832: Solve the equation: the hypotunus is 13. b= x+7 and A=x \n" ); document.write( "
Algebra.Com's Answer #57999 by checkley75(3666)\"\" \"About 
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a^2+b^2=c^2
\n" ); document.write( "x^2+(x+1)^2=13^2
\n" ); document.write( "x^2+x^2+2x+1=169
\n" ); document.write( "2x^2+2x+1-169=0
\n" ); document.write( "2x^2+2x-168=0
\n" ); document.write( "using the quadratic equation we get:
\n" ); document.write( "x=(-2+-sqrt[2^2-4*2*-168])/2*2
\n" ); document.write( "x=(-2+-sqrt[4+1344])/4
\n" ); document.write( "x=(-2+-sqrt1348)/4
\n" ); document.write( "x=(-2+-36.66)/4
\n" ); document.write( "x=(-2+36.66)/4
\n" ); document.write( "x=34.66/4
\n" ); document.write( "x=8.67 answer
\n" ); document.write( "x=(-2-36.66)/4
\n" ); document.write( "x=-38.66/4
\n" ); document.write( "x=-9.67 non answer.\r
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