Question

x elevado ao quadrado -8 x + 14=0

Answer 1

x² -8x +14 = 0

∆=(-8)² -4.1.14= 64 -56= 8 => √∆=2√2

x = -b±√∆/2a

x = 8±2√2/2

x' = 8+2√2/2 = 4+√2 ✓

x" = 8-2√2/2 = 4-√2 ✓

Answer 2

x² – 8x + 14 = 0, onde 1 = a ; b = – 8 e c = 14

problema de 2° grau, para achar as raízes da equação...

Bhaskara

b²– 4*a*c

(–8)² – 4*1*14

64 – 56

∆ = 8

x1/x2 = –b ± √∆

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2*a

x1/x2 = 8 ± √8

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2*1

x1/x2 = 8 ± 4√2

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2

x1 = 8 + 4√2 → x1 = 8 + 2√2

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2

x2 = 8 – 4√2 → x2 = 8 + 2√2

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2