Question

3x²-7×+2=0
Equação do 2⁰​

Answer 1

A=3

B=-7 /\ = b^2-4ac

C= 2

/\= (-7)^2-4.3.2

/\= 49 - 24

/\= 25 __

X= -b +- |/\

_________

2.a

___

X= - (-7) +-| 25

_____________

2.3

X= 7 +- 5

__________

6

X' = 7+5 = 12 = 2

_________

6

_

X" 7-5 = 2 = -0,3

_______

6

Answer 2

3x² - 7x + 2 = 0

A= 3

B= - 7

C= 2

∆= b² - 4ac

∆= ( - 7)² - 4 • 3 • 2

∆= 49 - 24

∆= 25

x= - b ± √∆ /2a

x= - ( - 7) ± √25/2 • 3

x= 7 ± 5/6

x'= 7 + 5/6 = 12/6 = 2

x''= 7 - 5/6 = 2/6 = 1/3

S= (1/3 , 2)