Question

sendo A= 3x²+5x-6, determine o valor de A para:

a) x= -2 b) x= 2-¹

Answer 1

A) A= 3(-2)²+5(-2)-6
3 (4)-10-6
12-10-6
2-6
-4

B) A= 3(1/2)²+5(1/2)-6
3 (1/4)+5/2-6
3/4+5/2-6
3+10-24
-11

Answer 2

Respostas
a)= -4

b)= -11/4