Question

qual a raiz de t²+6t+8=0??? urgente

Answer 1

Resposta:

Explicação passo a passo:

a=1

b=6

c=8

t=-6+-V6²-4.1.8/2.1

t=-6+-V36-32/2

t=-6+-V4/2

t=-6+-2/2

t'=-6+2/2=-4/2=-2

t''=-6-2/2=-8/2=-4

S={-4,2}