exam Maths Puzzle Numerical Ability

Pivot on the appropriate entry to find the nex tableau

[ 2 1 2 1 0 0 0 : 330]
[ 1 2 2 0 1 0 0 : 330]
[-2 -2 1 0 0 1 0 : 132]

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exam Other Question

Find all the zeros of the function:
*x^3+3x^2-x+12
Graph the system of inequalities

x<=2
y>=-2x+3