Quadratic equation

  • Quadratic - 2 polynomials

  • Quadratic formula:

    • ax² + bx + c —> -b ± √b² - 4ac / 2a

  • i = √-1

  • x² -x + 2 = 0

    -(1)² ±√(-1)² - 4(1)(2) / 2(1)

    1 ±√1-8 / 2

    1 ±√-7 / 2

    1 ±√7i / 2

  • 2x² + 3x = 4

    2x² + 3x - 4 = 0

    -3² ±√3² - 4(2(-4) / 2(2)

    9 ±√9 + 32 / 4

    9 ±√41 / 4