Question

Find the equation that is equivalent to the quadratic equation shown. Explain why

Answer 1

X² - 6x - 27 = 0
x = -(-6) +/- √((-6)² - 4(1)(-27))
                        2(1)
x = 6 +/- √(36 + 108)
                   2
x = 6 +/- √(144)
              2
x = 6 +/- 12
            2
x = 3 + 6
x = 3 + 6          x = 3 - 6
x = 9                x = -3