Question

Use the Quadratic Formula to find the exact solutions to the Quadratic Equation. 2x^(2)-x-15=0

Answer 1

2x² - x - 15 = 0

x = (-(-1) ± √((-1)² - 4(2)(-15)))/(4×2)

= (1 ± √(1 + 120))/8

= (1 ± √121)/8

= (1 ± 11)/8

= -5/4, 2/3