Answer:
1. -16
2. -14
3. 6
4. 14
5. 7
a=2
b=(-2)
c=3
6. 5b-2c
5(-2)-2(3)
-10 - 6
-16
7. 2a + 3b -4c
2(2) +3(-2) -4(3)
4 + (-6) -12
4-6-12
-14
8. 3(a+b) +2c
3(2) +3(-2) + 2(3)
6 +(-6) + 6
6-6+6
6
[tex]2 {c}^{2} - {a}^{2} \\ \: 2({3})^{2} - {2}^{2} \\ 2(9) - 4 \\ 14[/tex]
10. 2(a+b)-(c-b)
2(2) -2(-2) -[3-(-2)]
4 -(-4) - (3+2)
4+4 - (3 -2)
8 -3 +2
5+2
7
