Question

# Use Pascal triangle to expand

Hint:

### Pascal's Triangle is a method to know the binomial coefficients of terms of binomial expression (x + y)n , where n can be any positive integer and x, y are real numbers. Pascal Triangle is represented in a triangular form, it is kind of a number pattern in the form of a triangular arrangement.

We are asked to find the binomial expansion of 5 (x + y)5 using Pascal’s formula.

## The correct answer is: 5Cr

### Step 1 of 1:

The Pascal’s triangle is given by:

Using this, the sixth line can be used to find the expansion of 5 (x + y)^{5} . Thus, we have:

.

The answer cam also be found by expanding the formula of 5Cr .

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103 × 97

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103 × 97

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