exam Maths Puzzle Numerical Ability

Find a polynomial equation with real coefficents that has the given roots. 1,2 -3i

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exam Other Question

Can someone help me on this problem?

I need to rewrite the following equation as a function of x.

-3x + 4y = 11

Thanks so much,
Sher
What are the coordinates of the focal point y=3(2)(^2x+4)-5 ?