exam Maths Puzzle Numerical Ability

Find a rational zero of the polynomial function and use it to find all the zeros of the function.
f(x)=2x^3-x^2-12x+6

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exam Other Question

d..

Problem #1
Can someone explain to me if the following is rational or irrational and why?

minus then an index of 4 sqrt 16


Problem #2

Simplify. Assuming all variables represents positive numbers

sqrt (x^4y^3)
Solve:
9x – 10 = 3x - 1