The Total solution for NCERT class 6-12
Given:
(3x2 –1/x3)10
Let us consider the 7th termas T7
So,
T7 = T6+1
= 10C6 (3x2)10-6 (-1/x3)6
= 10C6 (3)4 (x)8 (1/x18)
= [10×9×8×7×81] /[4×3×2×x10]
= 17010 / x10
∴ The 7th termof the expression (3x2 – 1/x3)10 is17010 / x10.