Answer:
21d(10d-3)
Step-by-step explanation:
21d x 10d = 210d^2
21d x 3 = -63d
so it would be 210d^2 - 63d
Answer:
A ..
Step-by-step explanation:
Answer:
First box{8} Second box {224}
Step-by-step explanation: I do K12
Answer:
its cos 50
Step-by-step explanation:
amen