Question

X elevado a 2 - 3x + 1 = 0​

Answer 1

x² - 3x + 1 = 0

A= 1

B= - 3

C= 1

∆= b² - 4ac

∆= ( - 3)² - 4 • 1 • 1

∆= 9 - 4

∆= 5

x= - b ± √∆/2a

x= - ( - 3) ± √5/2 • 1

x= 3 ± √5/2

x'= 3 + √5/2

x''= 3 - √5/2