Solve 321^2-21^2-200*342/5*342=

$$\frac { 321 ^ { 2 } - 21 ^ { 2 } - 200 \cdot 342 } { 5 \cdot 342 } =$$

Evaluate

$$20$$

Solution Steps

Calculate 321 to the power of 2 and get 103041.

$$\frac{103041-21^{2}-200\times 342}{5\times 342}$$

Calculate 21 to the power of 2 and get 441.

$$\frac{103041-441-200\times 342}{5\times 342}$$

Subtract 441 from 103041 to get 102600.

$$\frac{102600-200\times 342}{5\times 342}$$

Multiply 200 and 342 to get 68400.

$$\frac{102600-68400}{5\times 342}$$

Subtract 68400 from 102600 to get 34200.

$$\frac{34200}{5\times 342}$$

Multiply 5 and 342 to get 1710.

$$\frac{34200}{1710}$$

Divide 34200 by 1710 to get 20.

$$20$$

Factor

$$2^{2}\times 5$$