Question

ALGUEM RESPONDE ESSAS QUESTÕES DE BHASKARA PLEASE :)​

Answer 1

Explicação passo-a-passo:

x² - 4x + 9 = 0

a= 1; b = -4; c = 9

D = -4² - 4 . 1 . 9

D = 16 - 36

D = -20

25x² - 20x + 4 = 0

a= 25; b = -20; c = 4

D = -20² - 4 . 25 . 4

D = 400 - 400

D = 0

x' = -(-20) + 0

2 . 25

x' = 20 + 0

50

x' = 20

50

x' = 2/5

x" = -(-20) - 0

2 . 25

x" = 20 - 0

50

x'' = 20

50

x'' = 2/5

x² + 2x - 15 = 0

a= 1; b = 2; c = -15

D = 2² - 4 . 1 . (-15)

D = 4 + 60

D = 64

x' = -2 + 8

2 . 1

x' = -2 + 8

2

x' = 6

2

x' = 3

x" = -2 - 8

2 . 1

x" = -2 - 8

2

x'' = -10

2

x'' = -5

x² + 3x + 2 = 0

a= 1; b = 3; c = 2

D = 3² - 4 . 1 . 2

D = 9 - 8

D = 1

x' = -3 + 1

2 . 1

x' = -3 + 1

2

x' = -2

2

x' = -1

x" = -3 - 1

2 . 1

x" = -3 - 1

2

x'' = -4

2

x'' = -2

x² + x - 12 = 0

a= 1; b = 1; c = -12

D = 1² - 4 . 1 . (-12)

D = 1 + 48

D = 49

x' = -1 + 7

2 . 1

x' = -1 + 7

2

x' = 6

2

x' = 3

x" = -1 - 7

2 . 1

x" = -1 - 7

2

x'' = -8

2

x'' = -4

x² - 2x + 1 = 0

a= 1; b = -2; c = 1

D = -2² - 4 . 1 . 1

D = 4 - 4

D = 0

x' = -(-2) + 0

2 . 1

x' = 2 + 0

2

x' = 2

2

x' = 1

x" = -(-2) - 0

2 . 1

x" = 2 - 0

2

x'' = 2

2

x'' = 1

x² + 6x + 9 = 0

a= 1; b = 6; c = 9

D = 6² - 4 . 1 . 9

D = 36 - 36

D = 0

x' = -6 + 0

2 . 1

x' = -6 + 0

2

x' = -6

2

x' = -3

x" = -6 - 0

2 . 1

x" = -6 - 0

2

x'' = -6

2

x'' = -3

4 + x² - 4x = x

x² - 5x + 4 = 0

a= 1; b = -5; c = 4

D = -5² - 4 . 1 . 4

D = 25 - 16

D = 9

x' = -(-5) + 3

2 . 1

x' = 5 + 3

2

x' = 8

2

x' = 4

x" = -(-5) - 3

2 . 1

x" = 5 - 3

2

x'' = 2

2

x'' = 1