Solve -2a^2-(-a^2)

$$- 2 a ^ { 2 } - ( - a ^ { 2 } )$$

Evaluate

$$-a^{2}$$

Solution Steps

Multiply -1 and -1 to get 1.

$$-2a^{2}+a^{2}$$

Combine -2a^{2} and a^{2} to get -a^{2}.

$$-a^{2}$$

Differentiate w.r.t. a

$$-2a$$

Steps Using Definition of a Derivative

Multiply -1 and -1 to get 1.

$$\frac{\mathrm{d}}{\mathrm{d}a}(-2a^{2}+a^{2})$$

Combine -2a^{2} and a^{2} to get -a^{2}.

$$\frac{\mathrm{d}}{\mathrm{d}a}(-a^{2})$$

The derivative of ax^{n} is nax^{n-1}.

$$2\left(-1\right)a^{2-1}$$

Multiply 2 times -1.

$$-2a^{2-1}$$

Subtract 1 from 2.

$$-2a^{1}$$

For any term t, t^{1}=t.

$$-2a$$