Answer :

Marah010403

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

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