1.The absolute difference of the coefficients of x10x^{10}x10 and x7x^7x7 in the expansion of (2x2+1x)15\left(2x^2 + \dfrac{1}{x}\right)^{15}(2x2+x1)15 is equal to:a.13⋅(133)13 \cdot \binom{13}{3}13⋅(313)b.11⋅(133)11 \cdot \binom{13}{3}11⋅(313)c.10⋅(133)10 \cdot \binom{13}{3}10⋅(313)d.12⋅(133)12 \cdot \binom{13}{3}12⋅(313)Login to continueOnly logged in users canattempt or see the solution.
