document.write( "Question 242550: -x[-x(x-a) - (a-x)] x= -2
\n" ); document.write( " a= -5
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Algebra.Com's Answer #177567 by College Student(505)\"\" \"About 
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-x[-x(x-a)-(a-x)]
\n" ); document.write( "Let x= -2
\n" ); document.write( "Let a= -5
\n" ); document.write( ".
\n" ); document.write( "In this problem we need to substitute the values of these two variables into the expression, then simplify it.
\n" ); document.write( "Be careful with the negatives. In order to avoid confusion, I will be using parenthesis to distinguish a negative number from a deduction.
\n" ); document.write( "Remember that when we deduct a negative number is the same as adding its positive value. Watch carefully:
\n" ); document.write( ".
\n" ); document.write( "\"-x%28-x%28x-a%29-%28a-x%29%29\"
\n" ); document.write( "\"-%28-2%29%28-%28-2%29%28%28-2%29-%28-5%29%29-%28%28-5%29-%28-2%29%29%29\"
\n" ); document.write( "Now that we've substituted the values, we convert -(-) into postives.
\n" ); document.write( "\"2%282%28-2%2B5%29-%28-5%2B2%29%29\"
\n" ); document.write( "Let's solve what is inside the two smallest parenthesis.
\n" ); document.write( "\"2%282%283%29-%28-3%29%29\"
\n" ); document.write( "Now multiply 2 and 3 above, so we get:
\n" ); document.write( "\"2%286-%28-3%29%29\"
\n" ); document.write( "Remember: deducting a negative is the same as adding its positive so -(-3)=3
\n" ); document.write( "\"2%286%2B3%29\"
\n" ); document.write( "Add numbers inside the parenthesis shown above, so we get:
\n" ); document.write( "\"2%2A9\"
\n" ); document.write( "Now multiply
\n" ); document.write( "\"18\" <--- this is our final result! :)
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