Solve 31,8^2-2*31,8*21,8+21,8^2

$$31,8 ^ { 2 } - 2 \cdot 31,8 \cdot 21,8 + 21,8 ^ { 2 }$$

Evaluate

$$1941,52$$

Solution Steps

Calculate 8 to the power of 2 and get 64.

$$31\times 64-2\times 31,8\times 21,8+21\times 8^{2}$$

Multiply 31 and 64 to get 1984.

$$1984-2\times 31,8\times 21,8+21\times 8^{2}$$

Multiply 2 and 31,8 to get 63,6.

$$1984-63,6\times 21,8+21\times 8^{2}$$

Multiply 63,6 and 21,8 to get 1386,48.

$$1984-1386,48+21\times 8^{2}$$

Subtract 1386,48 from 1984 to get 597,52.

$$597,52+21\times 8^{2}$$

Calculate 8 to the power of 2 and get 64.

$$597,52+21\times 64$$

Multiply 21 and 64 to get 1344.

$$597,52+1344$$

Add 597,52 and 1344 to get 1941,52.

$$1941,52$$

Factor

$$\frac{2 \cdot 7 \cdot 3467}{5 ^ {2}} = 1941\frac{13}{25} = 1941.52$$