Question

2x ao quadrado+4x-30=0

me ajudem ​

Answer 1

Resposta:

2x²+4x-30

a=2 b=4 c=-30

Δ=b²-4ac

Δ=4²-4.2.-30

Δ=16+240

Δ=256

-b±√Δ/2a

-4+256/4=63

-4-256/4=-65

X'=63

x''=65