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Maths Puzzle
Numerical Ability
Restar a-b de b-a
x-y de 2x+3y
-5a+b de -7a+5
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book Other Question
perform indicated operations and simplify
1. (x-4)cubed
2. (x(a)-1)(x(a)+1)
3.2y(2)+6/y(2)-y times y(2)-y(3)/4-8y
4.9xy(3)/7x(2)y divided by 2x(2)y(2)/ 3x(4)
systems o
can someone check my answers, QUESTON: Simplify the following expressions by combining as many terms as possible.
3xy+5xy
my answer 8xy
9X^2T-7X^2T
my answer 2x^2t
2xy+6y+8xy
my answer 16xy
thanks