cmon brainly help me with 8 through 12 im begging you 500+ points wasted

Answer:
I know 9-12.
9) a^2+8a-10
10) 15v+22w
11) 10c^2+4c
12) z^3-8z^2+5z+23
Step-by-step explanation:
Answer:
8. P=10X+16Y+14
9. a^2+8a-10
10. 15v+22w
11. 10c^2+4c
12. z^3-8z^2+5z+23
Step-by-step explanation:
8. P=2(l+w)
P=2((2x+7)+(3x+8y))
P=2(5x+8y+7)
P=10x+16y+14
9. 3a+a^2+5a-10 = a^2+8a-10
10. 8v+8w+7v+14w = 15v+22w
11. 4c^2+6c+6c^2-2c = 10c^2+4c
12. z^3+5z+15+8-8z^2 = z^3-8z^2+5z+23