Question

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Answer 1

Answer:

$9 {x}^{2} + 24x + 18$

Step-by-step explanation:

Use rainbow expansion method.

Answer 2

Answer:

Step-by-step explanation:

To solve this expression we have to FOIL:

1. multiply the first values in each parentheses

(3x)(3x) = $9x^2$

(x times x is $x^2$)

2. multiply the outer values of each parentheses

(3x)(2) = 6x

(Multiply only the coefficent)

3. multiply the inner values of the parentheses

(9)(3x) = 27x

4. multiply the last values of the parentheses

(9)(2) = 18

Then add the values and combing like terms:

$9x^2$ + 6x + 27x + 18

$9x^2$ + 33x + 18