exam Maths Puzzle Numerical Ability

Solve the equation.
cuberoot2^(2-x) = 2^(x^2)
This problem is very confusing for me, please help!

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exam Other Question
xy+xz=2
yx+yz=2
xz+yz=2 Please help to solve...

There are 26 nickels, dimes and quarters in all, and their value was $2.25. how many coins of each type were there if there were 10 times as many nickels as quarters?