Answer:
25
x
3
a
2
Step-by-step explanation:

is (2x+5y)(2x+5y) so now you use FOIL (First, Outer, Inner, Last) to distribute.

+10xy+10xy+

Now combine like terms

Hope that helps
Answer:
1/4, -1/8, and 1/16
Step-by-step explanation:
Geometric sequence: -2, 1, -1/2, ....
Geometric sequence means there is a common ratio.
so from -2 , the next term is -2*r , and the next term is -2*r*r
-2r = 1, means r = -1/2
then next after -1/2, is 1/4,
and then... -1/8, and then 1/16
Answer:
not sure
Step-by-step explanation: