exam
Maths Puzzle
Numerical Ability
Please help me! Simplify and evaluate (x^7y^-4z^0/5^-2x^3y^-8z^-9)^2 This is a homework question. Your help is appreciated.
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exam Other Question
A boat travels 30 miles upstream in 4 hours. The trip downstream takes 2.5 hours. Find the rate of the boat in still water.
simpify:
-4[5x-6(-5+x)]