book Maths Puzzle Numerical Ability

Identify the shape of the graph, transform it into standard form, and sketch the graph.
25x^2 + 4y^2 - 300x - 24y + 836 = 0

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book Other Question

Find the real solution, if any. Use quadratic formula and calculator.
x^2+sqrt2x-2=0

Thanks Caroline the measure of the second angle of a triangle is 21 degrees more than the measure of the first angle. The measure of the thirs angle is 15 degrees less than the measure of the firs