book Maths Puzzle Numerical Ability

Directions: Determine the least degree polynomial function with integral coefficients that gives the following roots:

2i

Thank you!

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book Other Question

How do you simplify an equation like this {{{r^2+3s^2+8r+5^r2}}} ??? Please Help me Mrs.Beal, a retiree, will lose some retirement benefits is she earns over $8000 per year working as a baby-sitter. If she already earned $6500. for how many more hours may she work