Question

Use the quadratic formula to find both solutions to the quadratic equation

given below.
2x2 + x -1 = 0

Answer 1

Answer: x=1/2 & x=-1

Explanation:

Answer 2

Explanation:

2x² + x -1 = 0

x² + x² + x -1 = 0

(x² - 1) + x² + x =0

(x + 1) (x - 1) + x(x + 1) =0

(x+1) (x - 1 + x) = 0

(x + 1)(2x - 1) = 0