document.write( "Question 1175603: 2. Given the binary operation a*b=2a2 - b, find -2*1 (show Solution) \n" ); document.write( "
Algebra.Com's Answer #801242 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "Note: Use \"^\" to denote exponentiation. E.g., \"2a^2\" for 2 a squared, instead of \"2a2\".

\n" ); document.write( "Given the definition

\n" ); document.write( "a*b = 2a^2-b,

\n" ); document.write( "if a=-2 and b=1 then

\n" ); document.write( "a*b = (-2)*1 = 2(-2)^2-(1) = 2(4)-1 = 8-1 = 7

\n" ); document.write( "This kind of statement looks strange the first couple of times you see it. But it's quite simple.

\n" ); document.write( "The definition \"a*b = 2a^2-b\" simply tells you that if you have two numbers a and b, the value of a*b is found by squaring the first number, doubling it, and subtracting the second number.

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