Question

2 x elevado a 2 + 5x - 3 = 0​

Answer 1

2x²+5x-3=0

a) 2

b) 5

c) -3

∆ = b²-4*a*c

∆ = 5²-4*2*(-3)

∆ = 25 + 24

∆ = 49

x = -b +- √∆ /2*a

x = -5 +-√49 /2*2

x = -5 +- 7 /4

x' = 1/2

x" = -3