document.write( "Question 101984: solve the following formula for x2: d=(square root of: (x2-x1)^2 + (y2-y1) ^2). \n" ); document.write( "

Algebra.Com's Answer #74165 by Fombitz(32388) $\"\"$ $\"About$

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$\"D=sqrt%28%28x%5B2%5D-x%5B1%5D%29%5E2+%2B+%28y%5B2%5D-y%5B1%5D%29+%5E2%29%29\"$
\n" ); document.write( " $\"D%5E2=%28x%5B2%5D-x%5B1%5D%29%5E2+%2B+%28y%5B2%5D-y%5B1%5D%29+%5E2%29\"$ Square both sides to remove square root.
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Use the additive inverse of $\"%28y%5B2%5D-y%5B1%5D%29%5E2\"$ .
\n" ); document.write( " $\"D%5E2-%28y%5B2%5D-y%5B1%5D%29+%5E2=%28x%5B2%5D-x%5B1%5D%29%5E2\"$ Simplify.
\n" ); document.write( "+/- $\"sqrt%28D%5E2-%28y%5B2%5D-y%5B1%5D%29+%5E2%29=%28x%5B2%5D-x%5B1%5D%29\"$ Take the square root of both sides, could be + or -.
\n" ); document.write( " $\"x%5B1%5D\"$ +/- $\"sqrt%28D%5E2-%28y%5B2%5D-y%5B1%5D%29+%5E2%29=+x%5B2%5D\"$ Use the additive inverse of $\"x%5B1%5D\"$ }
\n" ); document.write( " $\"x%5B2%5D=x%5B1%5D\"$ +/- $\"sqrt%28D%5E2-%28y%5B2%5D-y%5B1%5D%29%5E2%29\"$ Final answer. \n" ); document.write( "

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