The coefficient of $x^{18}$ in $(ax^{4}-bx)^{9}$ after expansion is

Loading...

Command Palette

Search for a command to run...

ClassNotes

Human-reviewed study resources for board exams, entry tests, and structured practice across notes, MCQs, flashcards, and past papers.

Support: [email protected]

Business: [email protected]

North America: +1 (512) 666-1423

Asia / MENA: +92 340 9170227

We typically reply within 3 business days.

Explore

Classes
Posts
MCQs
Flashcards
Search

Company

About
Contact
Tutors
Editorial Standards

Policies

Privacy Policy
Terms of Use
Cookie Policy
Refund Policy
Shipping Policy

© 2026 ClassNotes Inc. All rights reserved.

Allen, Texas and Lahore, Pakistan. Public support pages are available for privacy, terms, cookies, refunds, shipping, and editorial standards.

Shop
Tutors

The coefficient of $x^{18}$ in $(ax^{4}-bx)^{9}$ after expansion is

E

Editor

Sep 18, 2022

The coefficient of $x^{18}$ in $(ax^{4}-bx)^{9}$ after expansion is

Difficulty: Easy

A:

84a^{3}b^{6}

B:

22a^{3}b^{6}

C:

27a^{4}b^{5}

D:

28a^{3}b^{6}

ID: 63273db9ca83163ac3a11877