exam Maths Puzzle Numerical Ability

Hi. Could you please help me with this problem? The problem is "find the foci for the hyperbola 2x to the second power - 4y to the second power = 36.
Please help. Thank you!

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exam Other Question
solve: x^2+4x=3


a. -2.3, 0.3
b. -4.6, 0.6
c. -5.3, 1.3
d. -5.4, 0.4 x^5/x^3^-2 please help me simplify this expression.I know the answer is 9/25 but I don't know how to set it up