Question

2x²-10-8x=0
Encontre a raiz

Answer 1

Resposta:

Explicação passo a passo:

a=2

b=-8

c=-10

x=8+-V(-8)²-4.2.-10/2.2

x=8+-V64+80/4

x=8+-V144/4

x=8+-12/4

x'=8+12/4=20/4=5

x''=8-12/4=-4/4=-1

S={-1,5}