How do you expand the binomial #(x+y)^3#?

2 Answers
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

11
Dec 3, 2016

Answer:

#x^3+3x^2y+3xy^2+y^3#

Explanation:

You can use Pascal's triangle

              1
          1  2  1
        1   3   3  1

The third row is 1, 3, 3, 1,
so the expansion is #x^3+3x^2y+3xy^2+y^3#

Was this helpful? Let the contributor know!
1500
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

7
Rose Share
Dec 3, 2016

Answer:

The answer is (x + y) (x + y) (x + y).

Explanation:

There really is no detail to add. Just remember that an exponent means that you multiply the base (in this case (x + y)) the number of times equal to the number of the exponent (in this case 3).

Expand just means to write it all out in detail as much as possible instead of the shorthand (with the exponent).

Was this helpful? Let the contributor know!
1500