Solve (2)(-2)(1)+(1)(2)(1)+(3)(-2)(-1)

$$( 2 ) ( - 2 ) ( 1 ) + ( 1 ) ( 2 ) ( 1 ) + ( 3 ) ( - 2 ) ( - 1 )$$

Evaluate

$$4$$

Solution Steps

Multiply 2 and -2 to get -4. Multiply 1 and 2 to get 2. Multiply 3 and -2 to get -6.

$$-4+2\times 1-6\left(-1\right)$$

Multiply 2 and 1 to get 2.

$$-4+2-6\left(-1\right)$$

Add -4 and 2 to get -2.

$$-2-6\left(-1\right)$$

Multiply -6 and -1 to get 6.

$$-2+6$$

Add -2 and 6 to get 4.

$$4$$

Factor

$$2^{2}$$