Hii... I need help with some of this excersises...

1) Solve 3x2^ + 4x = 2

2) Solve x^2 + 9x + 9 = 0

3) Solve 2x^2 = 14x + 20

butt the answer cannot be like x= something and x= something else... it must be like ... or i don't know... Please help because I don't know how to do that.. thanks...!