Solve the equation for all real solutions in simplest form.

Question

2c^2-5c-9=-1

Answer 1

2c^2-5c-9=-1
2c^2 - 5c - 8 = 0
It does not factor, so use the formula

c = (5 ± √(25 - 4(2)(-8))/4
= (5 ± √89) / 4