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E ) 1x² - 22x 121=0
Δ = (-22)² . 4 . 1 .121
Δ = 484 4 . 121
Δ = 484 - 484
0
X = 22 +,- 0 =
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2 22 22
----- -----
2 2 V = { 11}
F) 1x - 13x + 42 = 0
Δ = b . 4 . a . c
Δ = (-13)² . 4 . 1 . 42
Δ = 169 . 4 . 42
Δ = 169 - 168
Δ = 1
x = 13 +,- 1
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2.1 12 14
----- ----- = V { 6,7}
2 2
G ) 1x² - 1x - 42 = 0
Δ = (-1)² . 4 . 1 . 42
Δ = 1 . 4 . 42
Δ = 1 . 168 V = ∅