Question

a² + b³
------- para A= -1 E B= -2
2




ab + c
--------- para A=2 , B= 5 E C=3
ab - c

Answer 1

a²+b³/2

=(-1)²+(-2)³/2

= +1 +(-8)/2

= 1-8/2

= -7/2

ab+c/ ab-c=

2.5+3/2.5-3

=10+3/10-3

=13/7