The common difference is essentially what u need to add to one number in the sequence to get the next
So previous number + common difference = next number after that
The common difference would be -8
<span>437 = (21 + x)(21 - x), then x = 2, -2</span>
Answer:
6z(z+3)
Step-by-step explanation:
6z square + 18z
take common..
6z(z+3)
Step-by-step explanation:
