Question

qual valor de b² -4.a.c,se a=1 b=2 e c=3

Answer 1

a=1 b=2 e c=3

b²-4*a*c

2²-4*1*3

4-4*3

4-12

-8

Answer 2

Olá!

Teremos:

2^2 - 4.1.3

4 - 12 ➡ -8