exam Maths Puzzle Numerical Ability

What is the square root of y+12=5? (the square root sign is over y+12)

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exam Other Question

Solve by completeing the square.

x squared - 6x -3 = 0



2x squared + 10x + 11 = 0
Using the change of base formula logax=lnx/lna, find the derivative of

y=log2x^3