Answer:
Step-by-step explanation:
2^0 is 1 also m^0 is 1
2^2= 4, 2^3= 8 , 2^4= 16
18cm square
I think domt know
46
10%*X=20
X=20/(10%)
X=20/0.1
X=200
23%*200=46
49b² - 81 = (7b)² - 9 ²
by identity : 49b² - 81 = (7b - 9)( 7b + 9)