64
10
0
4 x 4 is equal to 16.
4^2 = 16 4^3 = 64 16^5 = 16 x 16 x 16 x 16 x 16 = 256 x 256 x 16 = 1048576 You cannot add the powers in addition operation, but can in multiplication operation. Thus 4^2 x 4^3 = 4^5 = 1024 When a number is written to a power, it is multiplying by itself the power number of times. Thus: 4^2 = 4 x 4 4^3 = 4 x 4 x 4 and: 4^2 x 4^3 = (4 x 4) x (4 x 4 x 4) = 4 x 4 x 4 x 4 x 4 = 4^5 = 4^(2+3)
Assuming that is x squared minus 16: x2 - 16 = (x + 4)(x - 4) (The difference of two squares.)
Factors of X2 - 16 are (X + 4) and (X - 4).
16 = 1 x 16 16 = 2 x 8 16 = 4 x 4
1 x 16 = 16 2 x 8 = 16 4 x 4 = 16 8 x 2 = 16 16 x 1 = 16
20
4 x 4 = 16
-14
16(x+5)**2=1 (x+5)**2=1/16 (x+5)=2root(1/16) (x+5)=1/4 x=1/4-5 x= 1/4-20/4 x=-19/4 16(-19/4+5)**2=1 16(-19/4+20/4)**2=1 16(1/4)**2=1 16(1/16)=1 1=1
2 x 16 4 x 8 8 x 4 16 x 2