document.write( "Question 59974This question is from textbook Alegbra Concepts and Applications
\n" ); document.write( ": Find the value of \"a\" if the points are the indicated distances apart.\r
\n" ); document.write( "\n" ); document.write( "(2,a) and (-3,-2) when d = square root of 34
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Find the value of \"a\" if the points are the indicated distances apart.\r
\n" ); document.write( "\n" ); document.write( "(2,a) and (-3,-2) when d = square root of 34
\n" ); document.write( "The distance formula is \"highlight%28d=sqrt%28%28x2-x1%29%5E2%2B%28y2-y1%29%5E2%29%29\"
\n" ); document.write( "(x1,y1)=(2,a), (x2,y2)=(-3,-2) d=\"sqrt%2834%29\"
\n" ); document.write( "\"sqrt%2834%29=sqrt%28%28-3-2%29%5E2%2B%28-2-a%29%5E2%29\"
\n" ); document.write( "\"%28sqrt%2834%29%29%5E2=%28sqrt%28%28-5%29%5E2%2B%28-2-a%29%5E2%29%29%5E2\"
\n" ); document.write( "\"34=%28-5%29%5E2%2B%28-2-a%29%5E2\"
\n" ); document.write( "\"34=25%2B4%2B4a%2Ba%5E2\"
\n" ); document.write( "\"34=29%2B4a%2Ba%5E2\"
\n" ); document.write( "\"-34%2B34=-34%2B29%2B4a%2Ba%5E2\"
\n" ); document.write( "\"0=-5%2B4a%2Ba%5E2\" Set = to 0
\n" ); document.write( "\"a%5E2%2B4a-5=0\" factor
\n" ); document.write( "(a+5)(a-1)=0 Use the zero product property.
\n" ); document.write( "a+5=0 and a-1=0
\n" ); document.write( "a+5-5=0-5 and a-1+1=0+1
\n" ); document.write( "a=-5 and a=1
\n" ); document.write( "There's two possibilities. Use the distance formula and see that both have a distance of \"sqrt%2834%29\".
\n" ); document.write( "Happy Calculating!!!
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