Question

(i) expand : (4x+5y)³​

Answer 1

Answer:

Solution

(4x−5y)

3

=64x

3

−125y

3

−60xy(4x−5y)

=64x

3

−125y

3

−240x

2

y+300xy

2

Step-by-step explanation:

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Answer 2

Answer:

(4x−5y)

3

=64x 3−125y 3−60xy(4x−5y)

=64x 3 −125y 3 −240x 2y+300xy 2