Solve (-5+7)^2-(-12+9)^2-[-(-4)*(-5+4)]

$$( - 5 + 7 ) ^ { 2 } - ( - 12 + 9 ) ^ { 2 } - [ - ( - 4 ) \cdot ( - 5 + 4 ) ]$$

Evaluate

$$-1$$

Solution Steps

Add -5 and 7 to get 2.

$$2^{2}-\left(-12+9\right)^{2}-\left(-\left(-4\right)\right)\left(-5+4\right)$$

Calculate 2 to the power of 2 and get 4.

$$4-\left(-12+9\right)^{2}-\left(-\left(-4\right)\right)\left(-5+4\right)$$

Add -12 and 9 to get -3.

$$4-\left(-3\right)^{2}-\left(-\left(-4\right)\right)\left(-5+4\right)$$

Calculate -3 to the power of 2 and get 9.

$$4-9-\left(-\left(-4\right)\right)\left(-5+4\right)$$

Subtract 9 from 4 to get -5.

$$-5-\left(-\left(-4\right)\right)\left(-5+4\right)$$

The opposite of -4 is 4.

$$-5-4\left(-5+4\right)$$

Add -5 and 4 to get -1.

$$-5-4\left(-1\right)$$

Multiply 4 and -1 to get -4.

$$-5-\left(-4\right)$$

The opposite of -4 is 4.

$$-5+4$$

Add -5 and 4 to get -1.

$$-1$$

Factor

$$-1$$