Tính giá trị biểu thức

To simplify the expressions A and B, we can start by evaluating the calculations within the parentheses and then proceed with the rest of the operations.

For expression A:
A = (99,75)^2 + 1/16 + (1/2)*(99,75)

First, let's square the number (99,75):
(99,75)^2 = (99,75) * (99,75) = 99,75 * 99,75 = 9950,0625

Next, let's simplify the fraction 1/16:
1/16 = 0,0625

Now, let's calculate (1/2)*(99,75):
(1/2)*(99,75) = 0,5 * 99,75 = 49,875

Finally, let's add all the results together:
A = 9950,0625 + 0,0625 + 49,875 = 10000

Therefore, A = 10000.

For expression B:
B = 3*99 + 1 + 99^3 + 3*99^2

Let's start by calculating the powers of 99:
99^2 = 99 * 99 = 9801
99^3 = 99 * 99 * 99 = 970299

Now, let's proceed with the rest of the operations:
B = 3*99 + 1 + 970299 + 3*9801
B = 297 + 1 + 970299 + 29403
B = 1000000

Therefore, B = 1000000.