User:Zrs 12/math

$$\int_{-a}^a(x^4+x^2)\,dx$$ $$\left(\frac {x^5} 5 + \frac {x^3} 3 \right) $$ evaluated from -a to a $$\left( \frac {a^5} 5 + \frac {a^3} 3\right)- \left(\frac {-a^5} 5 - \frac {-a^3} 3\right)$$ $$\left( \frac {a^5} 5 + \frac {a^3} 3\right)+ \left(\frac {+a^5} 5 - \frac {a^3} 3\right)$$ $$\left( \frac {2a^5} 5\right)$$