Answer:
answer is in explanation
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
x - 9 = 11
+9 +9
x = 20
You gotta put -7y +6x = to the slope of line W
3. 5mn ( 2m + 6n + 1 )
4. 4a^3b^2c ( 18a^2b - 8c )
5. (X-15)(X+15)
6. -4(y-4.5)(y+4.5)
8. 2X(X-10)(X+10)
i am not sure if no. 8 is right