Expand Using the Binomial Theorem (s+3v)^5

${(s + 3 v)}^{5}$

Step 1

Use the binomial expansion theorem to find each term. The binomial theorem states ${(a + b)}^{n} = \sum_{k = 0}^{n} n C k \cdot (a^{n - k} b^{k})$ .

$\sum_{k = 0}^{5} \frac{5!}{(5 - k)! k!} \cdot {(s)}^{5 - k} \cdot {(3 v)}^{k}$

Step 2

Expand the summation.

$\frac{5!}{(5 - 0)! 0!} {(s)}^{5 - 0} \cdot {(3 v)}^{0} + \frac{5!}{(5 - 1)! 1!} {(s)}^{5 - 1} \cdot {(3 v)}^{1} + \dots + \frac{5!}{(5 - 5)! 5!} {(s)}^{5 - 5} \cdot {(3 v)}^{5}$

Step 3

Simplify the exponents for each term of the expansion.

$1 \cdot {(s)}^{5} \cdot {(3 v)}^{0} + 5 \cdot {(s)}^{4} \cdot {(3 v)}^{1} + \dots + 1 \cdot {(s)}^{0} \cdot {(3 v)}^{5}$

Step 4

Simplify the polynomial result.

$s^{5} + 15 s^{4} v + 90 s^{3} v^{2} + 270 s^{2} v^{3} + 405 s v^{4} + 243 v^{5}$

Expand Using the Binomial Theorem (s+3v)^5

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