1.Find a cubic equation with integral coefficients with roots 3i and -5 2.Does this work with quadratic equations as well? 3.Find all real and imaginary roots of X^3-3x^2+4x-12=0(do i use synthetic division to find all the roots?)
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Originally Posted by xian791 1.Find a cubic equation with integral coefficients with roots 3i and -5 2.Does this work with quadratic equations as well? 3.Find all real and imaginary roots of X^3-3x^2+4x-12=0(do i use synthetic division to find all the roots?) 1. 2. yes 3. finish up
for the first one, how did you get the answer? What does k stand for and you add and subtract 3i, but why not add and subtract 5?
k is just a constant which depends on what points (x,y) the cubic function passes through. if a polynomial has a root , then its conjugate is also a root. 5 is a single root.
im still a bit confused on the answer... lets say they gave u 8 and 3 and they wanted you to find the quadratic equation.How would you solve it?
if and are zeros of the quadratic function, then
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