exam Maths Puzzle Numerical Ability

Two angles are supplementary. One angle measures 12degrees more than the other. Find the measures of the angles.

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exam Other Question

find the minimum of the function:
-0.02x^3-5x^2+7900x-200000
and also you have to find the factor of this function. Hi its me again, I have another problem, thank you.
(5^8)^4
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(5^7)^4

I first expressed 5x5x5x5x5x5x5x5, then I expreseed 5x5x5x5x5x5x5, I must say Iam lost at this point