Find the first four nonzero terms of the Maclaurin series for ex2e^{x^2}ex2.
1+x2+x42+x661 + x^2 + \frac{x^4}{2} + \frac{x^6}{6}1+x2+2x4+6x6
x2+x42+x66+x824x^2 + \frac{x^4}{2} + \frac{x^6}{6} + \frac{x^8}{24}x2+2x4+6x6+24x8
1+x+x22+x361 + x + \frac{x^2}{2} + \frac{x^3}{6}1+x+2x2+6x3
1+x2+x44+x691 + x^2 + \frac{x^4}{4} + \frac{x^6}{9}1+x2+4x4+9x6