Solve using the quadratic formula: x2+3x−4=0x^2 + 3x - 4 = 0x2+3x−4=0
x=1 or x=−4x = 1 \text{ or } x = -4x=1 or x=−4
x=−1 or x=4x = -1 \text{ or } x = 4x=−1 or x=4
x=2 or x=−2x = 2 \text{ or } x = -2x=2 or x=−2
x=−3±72x = \frac{-3 \pm \sqrt{7}}{2}x=2−3±7