Answer:
49
Step-by-step explanation:
25b² + 70b + ....
( 5b + 7)² = 5×5b² + 2×5×7b + 7×7 = 25b² + 70b + 49
Answer:
1 quintillion km
Step-by-step explanation:
do you know that you can put 100000 earths to sun to fill it
It’s 28, 16 add 4 is 20 add 8 is 28
Answer:

Step-by-step explanation:
A = 5
B = 1
h = 2
k = -2
Use ABhk