Community mocks

Zach · Q9

Algebra

Find the coefficient of x15x^{15} in the expansion of (2x3+3x+4x5)5(2x^3+3x+4x^5)^5.

A1128011280
B99209920
C84628462
D1248212482
E1059210592

Read the questions freely. Sign in to check your answer, see the worked solution and save your progress.