Solve (-7a-6)+(-7a+6)

$$( - 7 a - 6 ) + ( - 7 a + 6 )$$

Evaluate

$$-14a$$

Solution Steps

Combine -7a and -7a to get -14a.

$$-14a-6+6$$

Add -6 and 6 to get 0.

$$-14a$$

Differentiate w.r.t. a

$$-14$$

Steps Using Definition of a Derivative

Combine -7a and -7a to get -14a.

$$\frac{\mathrm{d}}{\mathrm{d}a}(-14a-6+6)$$

Add -6 and 6 to get 0.

$$\frac{\mathrm{d}}{\mathrm{d}a}(-14a)$$

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

$$-14a^{1-1}$$

Subtract 1 from 1.

$$-14a^{0}$$

For any term t except 0, t^{0}=1.

$$-14$$