Answer:
14
Step-by-step explanation:
I think. sorry if i am wrong
The answer would be 21 because its the same length as the other side.
B I have done this before
Answer:
123
Step-by-step explanation:
s=-2
-15s^2-9(-5+s)
=-15s^2+45-9s
=-15s^2-9s+45
=15(-2)^2-9×(-2)+45
=15×4+18+45
=60+18+45
=123
