Question

(4a-5b)^3 expand the following​

Answer 1

Answer: (4a-5b)^3

= (4a)^3-(5b)^3-(3×4a×5b)(4a-5b)

= 64a^3-125b^3-60ab(4a-5b)

=64a^3-125b^3-240a^2+300ab^2

By using the identity,

(x-y)^3 = x^3-y^3-3xy(x-y)

Answer 2

$\huge{\underline{\tt{QUESTION:-}}}$

Expand (4a - 5b)^3 ?

$\huge{\underline{\tt{ANSWER:-}}}$

See the attachment !