book Maths Puzzle Numerical Ability

I would appreciate the kindness of your vauled help.

I have many to do!!!

Solve and show work!

(2y + 6) (y - 3) = 0

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book Other Question

I need to simplify this and cannot remember how. I must show work! Thank you for your wonderful help!

3^-2
I am confused with negative exponents. Can you help me solve
(-3x^3y^-5z^0)^-2
Divided by
( x^-2y^12)^-2

In words -3x cubed y to the -5 z to the 0 power,divided by x to the