exam Maths Puzzle Numerical Ability

here it is:

x^-3y^-2 / z^-4

I need help simplifying and writing with positive exponents. Thanks.

Gabriel.

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exam Other Question

directions: rationalize the denominator of the fraction ^3(rad)3/^3(rad)7. i tried to put the 3 part before the rad in the v part of the rad in the fraction of radicals. for this i Can you explain how to solve for x?

4x+5=cx+2

Thank you!