Question

equacao 2°grau x2-6x+8=0

Answer 1

∆=(-6)²-4.1.8
∆=36-32
∆=4
×=6±✓4/2
×=6±2/2
×'= 6+2/2= 8/2=4
×"= 6-2/2=4/2=2
espero ter ajudado!!!