Question

determine o valor numérico
2
1) 3x+8,para x=4
2)x+8,para x=6
3)5XY-X,PARA X=2 E Y= -1
2. 2
3x+2Y+4+,para x=2 e Y=2

Answer 1

1) 3.(4)+8
12+8=20

2)x+8
6+8=14

3)5.(2.(-12.2)-(2)
5.(2.(-24)-2
5.(-48)-2= -246

3x+2y+4
3.(2)+2.(2)+4
6+4+4=14