book Maths Puzzle Numerical Ability

Subtract 2x-3x^2+5x^3 from 5x^3+4x-x^2

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book Other Question

A boat took 1 hour and 5o minutes to go 55 miles downstream and 3 hours and 40 minutes to return. Find the rate of the current.

Thank you so much for helping me!! I was wondering if you could help me find the vertices, foci, and center of this conic section equation: 9x^2+25y^2-54x+50y-119=0
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