Question

9ײ+2×+1=0
O cálculo pfr

Answer 1

Resposta:

9x²+2x+1=0

retira os coeficiente

a) 9

b)2

c) 1

∆= b²-4.a.c

∆=2²-4.9.1

∆=4-4.9.1

∆=4-36

∆-32