Lesson 16 Practice

  1. Discriminant.

    2x^2+5x-8: 89

    3x^2-4x+7: -68

  2. Real Roots.

    2x^2+5x-8: 2

    3x^2-4x+7: 0

    2x^2-4x+2: 1

  3. Non-real Roots.

    2x^2+5x-8: 0

    3x^2-4x+7: 2

    2x^2-4x+2: 0

  4. Imaginary.

    i

    2i

  5. Solve The Equations 1. a) -2i,2i b) -8i,8i c) -3.2i,3.2i
  6. Power of i. a) i b) 1 c) 1
  7. Complex Numbers. a) 7-i b) 4+12i c) 26+2i d) 17-4i
  8. Challenge Question. a) 12 b) 20+40i
  9. Complex Conjugate. a) 3-4i b) 2+7i c) 9-17i
  10. Solve The Equations 2. a) -4i,4i b) -3-i,-3+i
  11. Solve The Equations 3. a) -2-\frac{i}{2},-2+\frac{i}{2} b) -2-i,-2+i