exam Maths Puzzle Numerical Ability

please help me solve these problems, Thank You!:
(2a^2n^5)(-3an^2)=
(3qn^2)^3=
(y^7/6)^2=

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exam Other Question

solve for x.

2 log2 x - log2 (x+4)= log2 2 The area of triangle ABC is (6t*t*t+5t*t+9)square inches.Find the measure of the height of the triangle in terms of t.

A to C is 4t+6)in squared