Question

me ajudem por favor

2x²+5x-3=0

Answer 1

2x²+5x-3=0

Δ = b² - 4ac

Δ = 25 -4.2.-3

Δ = 25 + 24

Δ = 49

√Δ = 7

x' = - b + √Δ/2a

x' = - 5 +7/2.2

x' = 2/4

x' = 1/2

x"= - b - √Δ/2a

x" = -5 - 7/2.2

x" = -12/4

x" = - 3

S + { 1/2, -3}