exam Maths Puzzle Numerical Ability

Simplify and evaluate
(x^4y^6z^12/9^-2x^3y^-8z^-9)0

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exam Other Question

Solve for eacg equation by factoring.
4x^2=12x-9 can someone please help me with this question:

Is this function always increasing, decreasing, remaining constant, or there is no way to know ?

y = 0(-x + 1)