Use the formula to solve the following inequalities. Leave your answers in surd form.

a) 3x² + 10x + 5 < 0 

b) x² – 6x + 7 > 0

c) 4x² + 3x – 2 > 0

d) 2x² + x – 2 ≤ 0 

e) 5x² – 8x – 2 ≥ 0

f) 6x² – 6x + 1 ≥ 0

g) 5 + 3x – x² ≤ 0  

h) 2x² + 2x – 3 < 0  

i) 2x + 1 – 2x² > 0 

j) x² < 1 – x