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Maths Puzzle
Numerical Ability
Curt Harris received a raise.He now makes $150 less than twice his old salary.Write an expression for Mr. Harris's current salary if his old salary was s.
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expand the brackets in the following
x(3-y)
(x+1)(x+2)
az(z2+bz)
(x+y)(x-y)
simplify (-6x^2y^3)^2
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(3xy^2)^3