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

can you pleaase assist me with the following problems.

determin wether the system has one solution, no solution or infinitely many solution.

y=-x+2
3x+37=6

y=2/3x
2x-y please solve this problem ,i hanged here
1) A) find the greatest common divisor of the real polynomials
f(x)=x*2+3x+2 and g(x)=x*5+2x*4+5x*3+6x+2

B) give simple descript