Answer:
A
Step-by-step explanation:
its -1 and 2 on edge
C=3,14xd
C=3,14x8= 25,12
4a^2-6b^2+12
(a^2 - 2b^2 + 3) - (4b^2 - 5) + (3a^2 + 4)
distribute the negative sign to each term in the 2nd expression
a^2-2b^2+3-4b^2+5+3a^2+4
combine like terms
1. 11
2.9
3.16
4.8
5.i didnt understood that
