exam Maths Puzzle Numerical Ability

Can someone help me solve this problem?

I need to multiply:

(-6) in the power of 2 - 4 in the power of 2

Thanks,
Lyn

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exam Other Question

an airplane flew 450miles from miami to tallahassee in 1.5hrs less time than it took to fly 1,200miles from to newark.if the plane few at the same rate on both trips,find the rate of the airplane. Simplify:
^4(sqrt)z^4