Write as a Set of Linear Factors g(x)=x^3+7x^2+9x-9

$g (x) = x^{3} + 7 x^{2} + 9 x - 9$

If a polynomial function has integer coefficients, then every rational zero will have the form $\frac{p}{q}$ where $p$ is a factor of the constant and $q$ is a factor of the leading coefficient.

$g (x) = p = \pm 1, \pm 9, \pm 3$

$q = \pm 1$

Find every combination of $\pm \frac{p}{q}$ . These are the possible roots of the polynomial function.

$g (x) = \pm 1, \pm 9, \pm 3$

Substitute $- 3$ and simplify the expression. In this case, the expression is equal to $0$ so $- 3$ is a root of the polynomial.

Substitute $- 3$ into the polynomial.

$g (x) = {(- 3)}^{3} + 7 {(- 3)}^{2} + 9 \cdot - 3 - 9$

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

$g (x) = - 27 + 7 {(- 3)}^{2} + 9 \cdot - 3 - 9$

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

$g (x) = - 27 + 7 \cdot 9 + 9 \cdot - 3 - 9$

Multiply $7$ by $9$ .

$g (x) = - 27 + 63 + 9 \cdot - 3 - 9$

Add $- 27$ and $63$ .

$g (x) = 36 + 9 \cdot - 3 - 9$

Multiply $9$ by $- 3$ .

$g (x) = 36 - 27 - 9$

Subtract $27$ from $36$ .

$g (x) = 9 - 9$

Subtract $9$ from $9$ .

$g (x) = 0$

Since $- 3$ is a known root, divide the polynomial by $x + 3$ to find the quotient polynomial. This polynomial can then be used to find the remaining roots.

$g (x) = \frac{x^{3} + 7 x^{2} + 9 x - 9}{x + 3}$

Divide $x^{3} + 7 x^{2} + 9 x - 9$ by $x + 3$ .

Set up the polynomials to be divided. If there is not a term for every exponent, insert one with a value of $0$ .

$g (x) =$

Divide the highest order term in the dividend $x^{3}$ by the highest order term in divisor $x$ .

$g (x) =$

Multiply the new quotient term by the divisor.

$g (x) =$

The expression needs to be subtracted from the dividend, so change all the signs in $x^{3} + 3 x^{2}$

$g (x) =$

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

$g (x) =$

Pull the next terms from the original dividend down into the current dividend.

$g (x) =$

Divide the highest order term in the dividend $4 x^{2}$ by the highest order term in divisor $x$ .

$g (x) =$

Multiply the new quotient term by the divisor.

$g (x) =$

The expression needs to be subtracted from the dividend, so change all the signs in $4 x^{2} + 12 x$

$g (x) =$

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

$g (x) =$

Pull the next terms from the original dividend down into the current dividend.

$g (x) =$

Divide the highest order term in the dividend $- 3 x$ by the highest order term in divisor $x$ .

$g (x) =$

Multiply the new quotient term by the divisor.

$g (x) =$

The expression needs to be subtracted from the dividend, so change all the signs in $- 3 x - 9$

$g (x) =$

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

$g (x) =$

Since the remander is $0$ , the final answer is the quotient.

$g (x) = x^{2} + 4 x - 3$

Write $x^{3} + 7 x^{2} + 9 x - 9$ as a set of factors.

$g (x) = (x + 3) (x^{2} + 4 x - 3)$

Write as a Set of Linear Factors g(x)=x^3+7x^2+9x-9

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