b. [80 (6x² +14x) dx = ...
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[tex] \displaystyle \int \rm80(6 {x}^{2} + 14x)dx[/tex]
[tex]80 \displaystyle \int \rm(6 {x}^{2} + 14x)dx[/tex]
[tex] = \rm80 \left( \frac{6}{3} {x}^{3} + \frac{14}{2} {x}^{2} \right ) + C \\ [/tex]
[tex] = \rm80 \left( 2 {x}^{3} + 7 {x}^{2} \right ) + C \\ [/tex]
[tex]= \rm 160 {x}^{3} + 560 {x}^{2} + C \\ [/tex]
[answer.2.content]
