Find the Degree, Leading Term, and Leading Coefficient (2+x)^5

${(2 + x)}^{5}$

Step 1

Simplify the polynomial, then reorder it left to right starting with the highest degree term.

Use the Binomial Theorem.

$2^{5} + 5 \cdot 2^{4} x + 10 \cdot 2^{3} x^{2} + 10 \cdot 2^{2} x^{3} + 5 \cdot 2 x^{4} + x^{5}$

Simplify terms.

Simplify each term.

Raise $2$ to the power of $5$ .

$32 + 5 \cdot 2^{4} x + 10 \cdot 2^{3} x^{2} + 10 \cdot 2^{2} x^{3} + 5 \cdot 2 x^{4} + x^{5}$

Raise $2$ to the power of $4$ .

$32 + 5 \cdot 16 x + 10 \cdot 2^{3} x^{2} + 10 \cdot 2^{2} x^{3} + 5 \cdot 2 x^{4} + x^{5}$

Multiply $5$ by $16$ .

$32 + 80 x + 10 \cdot 2^{3} x^{2} + 10 \cdot 2^{2} x^{3} + 5 \cdot 2 x^{4} + x^{5}$

Raise $2$ to the power of $3$ .

$32 + 80 x + 10 \cdot 8 x^{2} + 10 \cdot 2^{2} x^{3} + 5 \cdot 2 x^{4} + x^{5}$

Multiply $10$ by $8$ .

$32 + 80 x + 80 x^{2} + 10 \cdot 2^{2} x^{3} + 5 \cdot 2 x^{4} + x^{5}$

Raise $2$ to the power of $2$ .

$32 + 80 x + 80 x^{2} + 10 \cdot 4 x^{3} + 5 \cdot 2 x^{4} + x^{5}$

Multiply $10$ by $4$ .

$32 + 80 x + 80 x^{2} + 40 x^{3} + 5 \cdot 2 x^{4} + x^{5}$

Multiply $5$ by $2$ .

$32 + 80 x + 80 x^{2} + 40 x^{3} + 10 x^{4} + x^{5}$

Simplify the expression.

Move $32$ .

$80 x + 80 x^{2} + 40 x^{3} + 10 x^{4} + x^{5} + 32$

Move $80 x$ .

$80 x^{2} + 40 x^{3} + 10 x^{4} + x^{5} + 80 x + 32$

Move $80 x^{2}$ .

$40 x^{3} + 10 x^{4} + x^{5} + 80 x^{2} + 80 x + 32$

Move $40 x^{3}$ .

$10 x^{4} + x^{5} + 40 x^{3} + 80 x^{2} + 80 x + 32$

Reorder $10 x^{4}$ and $x^{5}$ .

$x^{5} + 10 x^{4} + 40 x^{3} + 80 x^{2} + 80 x + 32$

Step 2

The degree of a polynomial is the highest degree of its terms.

Identify the exponents on the variables in each term, and add them together to find the degree of each term.

$x^{5} \to 5$

$10 x^{4} \to 4$

$40 x^{3} \to 3$

$80 x^{2} \to 2$

$80 x \to 1$

$32 \to 0$

The largest exponent is the degree of the polynomial.

$5$

Step 3

The leading term in a polynomial is the term with the highest degree.

$x^{5}$

Step 4

The leading coefficient of a polynomial is the coefficient of the leading term.

The leading term in a polynomial is the term with the highest degree.

$x^{5}$

The leading coefficient in a polynomial is the coefficient of the leading term.

$1$

Step 5

List the results.

Polynomial Degree: $5$

Leading Term: $x^{5}$

Leading Coefficient: $1$

Find the Degree, Leading Term, and Leading Coefficient (2+x)^5

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