Question

d) X2 - 14x + 49 =0Qual é a resposta dessa pergunta
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Answer 1

x^2 - 14x + 49 = 0

a = 1

b = -14

c = 49

Δ = b² - 4.a.c

Δ = -14² - 4.1.49

Δ = -196 + 196

Δ = 0

-b ± √Δ / 2.a

14 ± √0 / 2.1

14 ± 0 / 2

x' = 14 + 0 / 2

x' = 7

x" = 14 - 0 / 2

x" = 7