document.write( "Question 1066719: Given that -5<= x <=3 and -8<= y <=6 where both x and y are integers, calculate;
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\n" ); document.write( "b) the least value of 3xy
\n" ); document.write( "c) the greatest value of x^2+y^2
\n" ); document.write( "d) the least value of x^2-y^2
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Algebra.Com's Answer #681954 by Fombitz(32388)\"\" \"About 
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Greatest value of a sum choose the greatest value for both variables,
\n" ); document.write( "\"2x%2B3y=2%283%29%2B3%286%29=6%2B18=24\"
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\n" ); document.write( "\n" ); document.write( "Least value of a product choose the greatest of one variable and least value of the other variable, compare the products.
\n" ); document.write( "\"3xy=3%28-5%296=-90\"
\n" ); document.write( "\"3xy=3%283%29-8=-72\"
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\n" ); document.write( "Greatest value of sum of squares choose largest absolute value of both variables,
\n" ); document.write( "\"x%5E2%2By%5E2=%28-5%29%5E2%2B%28-8%29%5E2=25%2B64=89\"
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\n" ); document.write( "Least value of x^2-y^2, choose largest value of absolute value of x and smallest value of absolute value of y,
\n" ); document.write( "\"x%5E2-y%5E2=%28-5%29%5E2-0%5E2=25\"
\n" ); document.write( "25
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