Answer: Long division only.
- A Factorization
- B Quadratic formula
- C Completing the square
- D Long division only
Correct answer: D. Long division only
Explanation: Standard methods: factorization, quadratic formula, completing the square, and graphical method.
A complex number z = a+ib is plotted as a point (or vector from the origin) on the Argand plane, with the real part along the horizontal axis and the imaginary part along the vertical; its modulus |z| is the vector's length, and its argument θ is the angle from the positive real axis.
Concept context
Complex numbers in a+ib form, modulus, argument, polar form, cube roots of unity, and quadratic equations with complex roots
Read the full Complex Numbers and Quadratic Equations notes →