exam Maths Puzzle Numerical Ability

If the graph of y=x^2 is transformed to y=3(2)^(-1/4x-1)+1, what are the coordinates of the new focal point? I think (-4,4)????

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exam Other Question

Multiply using vertical method

(m^2-5mn+3n^2)(m^2+4mn-2n^2)
How do you solve |2x + 6| - 4 = 20, whats the answer?