Find the middle terms(s) in the expansion of:(i) x-1x10(ii) 1-2x+x2n(iii) 1+3x+3x2+x32n(iv) 2x-x249(v) x-1x2n+1(vi) x3+9y10(vii) 3-x367(viii) 2ax-bx212(ix) px+xp9(x) xa-ax10

Find the middle terms(s) in the expansion of:(i) x-1x10(ii) 1-2x+x2n(i

1.	Find the middle terms(s) in the expansion of:(i) x-1x10(ii) 1-2x+x2n(iii) 1+3x+3x2+x32n(iv) 2x-x249(v) x-1x2n+1(vi) x3+9y10(vii) 3-x367(viii) 2ax-bx212(ix) px+xp9(x) xa-ax10
Answer» Find the middle terms(s) in the expansion of: (i) ${(x - \frac{1}{x})}^{10}$ (ii) ${(1 - 2 x + x^{2})}^{n}$ (iii) ${(1 + 3 x + 3 x^{2} + x^{3})}^{2 n}$ (iv) ${(2 x - \frac{x^{2}}{4})}^{9}$ (v) ${(x - \frac{1}{x})}^{2 n + 1}$ (vi) ${(\frac{x}{3} + 9 y)}^{10}$ (vii) ${(3 - \frac{x^{3}}{6})}^{7}$ (viii) ${(2 a x - \frac{b}{x^{2}})}^{12}$ (ix) ${(\frac{p}{x} + \frac{x}{p})}^{9}$ (x) ${(\frac{x}{a} - \frac{a}{x})}^{10}$