well 400, so 20*20=10*10*2*2=5*5*2*2*2*2
log17.0002
400
20x20
20x20=400
20.0+3.0+0.005
700+1+4
200 Fdrfc
Expaned form
20 squared = 400 = (4 x 100) + (0 x 10) + (0 x 1)
20 squared = 20 x 20 = 400 400 in expanded form using exponents = (4 x 10^2) + (0 x 10^1) + (0 x 10^0)
40+4+0.8+0.01+0.005
157 is already prime. No factorization.