Question

y ao quadrado - 7y + 6 = 0

Answer 1

y² -7y +6=0 ==> a=1, b=-7, c=6

∆=(-7)² -4.1.6= 49 -24 = 25 => √∆=5

y = -b±√∆/2a

y = 7±5/2

y' = 7+5/2 = 12/2 = 6 ✓

y'' = 7-5/2 = 2/2 = 1 ✓

Answer 2

y² - 7y + 6 = 0

A= 1
B= - 7
C= 6

∆= b² - 4ac

∆= (-7)² - 4 • 1 • 6
∆= 49 - 24
∆= 25

y = - b ± √∆ / 2a

y= - ( - 7) ± √25 / 2 • 1
y= 7 ± 5 / 2

y' = 7 + 5 / 2 = 12 / 2 = 6
y" = 7 - 5 / 2 = 2 / 2 = 1

S= ( 1 , 6)