Kvadratna jednadžba

x²=36

• x₁=18 i x₂=-18

• x₁=6i i x₂=-6i

• x₁=6 i x₂=-6

• x₁=18i i x₂=-18i

x²=-49

• x=-7

• x=7i

• x₁=7i i x₂=-7i

• x₁=7 i x₂=-7

x²-16=0

• x₁=8i i x₂=-8i

• x₁=4 i x₂=-4

• x₁=4i i x₂=-4i

• x₁=8 i x₂=-8

x²+64=0

• x₁=32 i x₂=-32

• x₁=8 i x₂=-8

• x₁=32i i x₂=-32i

• x₁=8i i x₂=-8i

x²+0.04=0

• x₁=0.2, x₂=-0.2

• x₁=0.2i, x₂=-0.2i

• x₁=0.02, x₂=-0.02

• x₁=0.02i, x₂=-0.02i

400-x²=0

• x₁=20i, x₂=-20i

• x₁=200, x₂=-200

• x₁=20, x₂=-20

• x₁=200i, x₂=-200i

-900-x²=0

• x₁=30, x₂=-30

• x₁=450, x₂=-450

• x₁=450i, x₂=-450i

• x₁=30i, x₂=-30i