Question

Find the 5th term in the expansion of (3x – 4y)⁷.((step by step explanation,from binomial theorem chapter))

Answer 1

Answer:

we know that

${(a - b)}^{2} = { {a}^{2} - 2ab + {b}^{2} }$

so

acc to Ques

a=3x and b=4y

on putting the values in formula

(3x)²-2×3x×4y+(4y)²

9x²-24xy+16y²

Answer 2

Answer:

Step-by-step explanation: we know that

so

acc to Ques

a=3x and b=4y

on putting the values in formula

(3x)²-2×3x×4y+(4y)²

9x²-24xy+16y²