Question

How do you use the quadratic formula to find both solutions to the quadratic equation `5 - 10x - 3x^2 = 0`?

Answer 1

Solve `y = -3x^2 - 10x + 5 = 0`

Explanation:

`D = d^2 = b^2 - 4ac = 100 + 60 = 160 -> d = +- 4sqrt10`

`x = - 5/3 +- (4sqrt10)/6 = 5/3 +- (2sqrt10)/ 3`