Question

$x {}^{2}-5x + 6 = 0$
qual eo cálculo eo valor?​

Answer 1

x² - 5x + 6 = 0

A= 1

B= - 5

C= 6

∆= b² - 4ac

∆= ( - 5)² - 4 • 1 • 6

∆= 25 - 24

∆= 1

x= - b ± √∆ /2a

x= - ( - 5) ± √1 /2 • 1

x= 5 ± 1/2

x'= 5 + 1/2 = 6/2 = 3

x''= 5 - 1/2 = 4/2 = 2

S= ( 2 , 3)