Question

expand the following
(2x + 3y) raised to 3​

Answer 1

Step-by-step explanation:

2x−3y)

3

=(2x)

3

−3(2x)

2

(3y)+3(2x)(3y)

2

−(3y)

3

=8x

3

−36x

2

y+54xy

2

−27y

3

Answer 2

Answer:

We use the above identity: (a+b)

3

=a

3

+3a

2

b+3ab

2

+b

3

. Take a=2x and b=3y and we get

(2x+3y)

3

=(2x)

3

+3(2x)

2

(3y)+3(2x)(3y)

2

+(3y)

3

=8x

3

+36x

2

y+54xy

2

+27y

3