exam Maths Puzzle Numerical Ability

The graph of any quadratic function is called?

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exam Other Question

The sum of the digits of a two-digit number is 12. The number formed by interchanging the digits is 54 more than the orginal number. find the original number and its reversal.

thank you Algebraically determine the EXACT roots in simplest form for (5/x-3)=(x/x+1)