This integral is solved by using the power rule. Move the the constant 7 to the outstide of the integral.
Then solve 7 ∫ *x*^{–2}*dx*
using the power rule with *n* = -2. Since *n* + 1 = –1, we get

∫ 7x^{–2} dx = 7 |
1 –1 | x^{–1} + C |

= –7x^{–1} + C |