Integral de $$$5 x^{2} - x - 309$$$

Encontre $$$\int \left(5 x^{2} - x - 309\right)\, dx$$$.

Integre termo a termo:

$${\color{red}{\int{\left(5 x^{2} - x - 309\right)d x}}} = {\color{red}{\left(- \int{309 d x} - \int{x d x} + \int{5 x^{2} d x}\right)}}$$

Aplique a regra da constante $$$\int c\, dx = c x$$$ usando $$$c=309$$$:

$$- \int{x d x} + \int{5 x^{2} d x} - {\color{red}{\int{309 d x}}} = - \int{x d x} + \int{5 x^{2} d x} - {\color{red}{\left(309 x\right)}}$$

Aplique a regra da potência $$$\int x^{n}\, dx = \frac{x^{n + 1}}{n + 1}$$$ $$$\left(n \neq -1 \right)$$$ com $$$n=1$$$:

$$- 309 x + \int{5 x^{2} d x} - {\color{red}{\int{x d x}}}=- 309 x + \int{5 x^{2} d x} - {\color{red}{\frac{x^{1 + 1}}{1 + 1}}}=- 309 x + \int{5 x^{2} d x} - {\color{red}{\left(\frac{x^{2}}{2}\right)}}$$

Aplique a regra do múltiplo constante $$$\int c f{\left(x \right)}\, dx = c \int f{\left(x \right)}\, dx$$$ usando $$$c=5$$$ e $$$f{\left(x \right)} = x^{2}$$$:

$$- \frac{x^{2}}{2} - 309 x + {\color{red}{\int{5 x^{2} d x}}} = - \frac{x^{2}}{2} - 309 x + {\color{red}{\left(5 \int{x^{2} d x}\right)}}$$

Aplique a regra da potência $$$\int x^{n}\, dx = \frac{x^{n + 1}}{n + 1}$$$ $$$\left(n \neq -1 \right)$$$ com $$$n=2$$$:

$$- \frac{x^{2}}{2} - 309 x + 5 {\color{red}{\int{x^{2} d x}}}=- \frac{x^{2}}{2} - 309 x + 5 {\color{red}{\frac{x^{1 + 2}}{1 + 2}}}=- \frac{x^{2}}{2} - 309 x + 5 {\color{red}{\left(\frac{x^{3}}{3}\right)}}$$

Portanto,

$$\int{\left(5 x^{2} - x - 309\right)d x} = \frac{5 x^{3}}{3} - \frac{x^{2}}{2} - 309 x$$

Simplifique:

$$\int{\left(5 x^{2} - x - 309\right)d x} = \frac{x \left(10 x^{2} - 3 x - 1854\right)}{6}$$

Adicione a constante de integração:

$$\int{\left(5 x^{2} - x - 309\right)d x} = \frac{x \left(10 x^{2} - 3 x - 1854\right)}{6}+C$$

$$$\int \left(5 x^{2} - x - 309\right)\, dx = \frac{x \left(10 x^{2} - 3 x - 1854\right)}{6} + C$$$A