Problem : Solve for x: 3x2 - 14x + 8 = 0

x = , 4

Problem : Solve for x: 4x2 - 1 = 0

x = , -

Problem : Solve for x: 2x2 + 5x

x = 0, -

Problem : Solve for x: 4x2 + 28x = - 49

x = -

Problem : Solve for x: 2x2 + 5x + 4

There are no solutions.

Problem : How many solutions do the following equations have?
a) 3x2 + 7x + 9
b) -2x2 + 3x + 4
c) 9x2 - 6x + 1
d) 2x2 + 4x - 1

a) 0
b) 2
c) 1
d) 2