exam Maths Puzzle Numerical Ability

can someone help me indicate which type of conic the problem represents
(x+2)^2/25 - (y-1)^2/9 = 1

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exam Other Question

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 simplify 4-6i/4+6i and express in the form of a + bi