Question

Resolva a equação 2x²-5x+3=0

Answer 1

2x² -5x -3=0

a=2 b= -5 c= -3

Δ= b² -4.a.c

Δ= (-5)² -4.2.(-3)

Δ= 25 +24

Δ= 49

x= -b+-√Δ

2.a

x=-(-5) +- √49

2. 2

x=5 +- 7

4

x' = 5 -7 = -2= -1

4 4 2

x''= 5 + 7 = 12= 3

4 4

{-1/2,3}

Prontinho! :)