Answer: 2/3 and 1.
- A 1/3 and 2
- B 2/3 and 1
- C 1/3 and 1
- D 2 and 3
Correct answer: B. 2/3 and 1
Explanation: 3x² - 5x + 2 = (3x - 2)(x - 1) = 0. x = 2/3 or x = 1.
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
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