book Maths Puzzle Numerical Ability

Graph. Identify the conic section and describe the graph and its lines of symmetry. Then find the domain and ranger
3y squared- xsquared =25

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book Other Question

My question says to simplify the radicals.

2 square root of 32+3 square root of 50-3 square root of 18

Could you help me? thanks!
y^4 - 3y^3 - 2y^2 + 10y - 12 = 0; 1 + i