Simplify each of the following:(i) (x+3)3 + (x−3)3(ii) x2+y33-x2-y33(iii) x+2x3+x-2x3(iv) (2x − 5y)3 − (2x + 5y)3

Simplify each of the following:(i) (x+3)3 + (x−3)3(ii) x2+y33-x2-y33

1.	Simplify each of the following:(i) (x+3)3 + (x−3)3(ii) x2+y33-x2-y33(iii) x+2x3+x-2x3(iv) (2x − 5y)3 − (2x + 5y)3
Answer» Simplify each of the following: (i) (x+3)³ + (x−3)³ (ii) ${(\frac{x}{2} + \frac{y}{3})}^{3} - {(\frac{x}{2} - \frac{y}{3})}^{3}$ (iii) ${(x + \frac{2}{x})}^{3} + {(x - \frac{2}{x})}^{3}$ (iv) (2x − 5y)³ − (2x + 5y)³