Question

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Answer 1

Explicação passo-a-passo:

a)

x² + x + 5 = 0

a =1; b = 1; c = 5

D = b²-4.a.c

D = 1²-4 . 1 . 5

D = 1 - 20

D = -19

b)

5x² + x + 1 = 0

a =5; b = 1; c = 1

D = b²-4.a.c

D = 1²-4 . 5 . 1

D = 1 - 20

D = -19

c)

2x² - 18x + 0 = 0

a =2; b = -18; c = 0

D = b²-4.a.c

D = (-18)²-4 . 2 . 0

D = 324 + 0

D = 324

d)

6x² - 24x + 0 = 0

a =6; b = -24; c = 0

D = b²-4.a.c

D = (-24)²-4 . 6 . 0

D = 576 + 0

D = 576

e)

2x² + 4x + 0 = 0

a =2; b = 4; c = 0

D = b²-4.a.c

D = 4²-4 . 2 . 0

D = 16 + 0

D = 16

f)

x² + x + 1 = 0

a =1; b = 1; c = 1

D = b²-4.a.c

D = 1²-4 . 1 . 1

D = 1 - 4

D = -3

g)

4x² + 2x + 1 = 0

a =4; b = 2; c = 1

D = b²-4.a.c

D = 2²-4 . 4 . 1

D = 4 - 16

D = -12

h)

x² + x + 0 = 0

a =1; b = 1; c = 0

D = b²-4.a.c

D = 1²-4 . 1 . 0

D = 1 + 0

D = 1