Multiply (6x^2 + 4x − 3)(−3x + 2) (2 points) Use the area model to find the product of the polynomials then state the simplified product written in standard form as

1 answer

To find the product of the polynomials \((6x^2 + 4x - 3)(-3x + 2)\) using the area model, we can break this down into simpler parts.

Step 1: Set Up the Area Model

We will create a grid that corresponds to the terms in each polynomial. The first polynomial has three terms, and the second polynomial has two terms:

  • For \(6x^2 + 4x - 3\): 1st row will be \(6x^2\), 2nd row will be \(4x\), and 3rd row will be \(-3\).
  • For \(-3x + 2\): first column will be \(-3x\) and the second column will be \(2\).

This gives us a 3x2 grid:

\[ \begin{array}{c|c|c} & -3x & 2 \ \hline 6x^2 & 6x^2 \cdot (-3x) & 6x^2 \cdot 2 \ \hline 4x & 4x \cdot (-3x) & 4x \cdot 2 \ \hline -3 & -3 \cdot (-3x) & -3 \cdot 2 \ \end{array} \]

Step 2: Calculate Each Product

Now, we'll fill in the products for each cell in the grid.

  1. For the cell \(6x^2 \cdot (-3x)\): \[ 6x^2 \cdot (-3x) = -18x^3 \]

  2. For the cell \(6x^2 \cdot 2\): \[ 6x^2 \cdot 2 = 12x^2 \]

  3. For the cell \(4x \cdot (-3x)\): \[ 4x \cdot (-3x) = -12x^2 \]

  4. For the cell \(4x \cdot 2\): \[ 4x \cdot 2 = 8x \]

  5. For the cell \(-3 \cdot (-3x)\): \[ -3 \cdot (-3x) = 9x \]

  6. For the cell \(-3 \cdot 2\): \[ -3 \cdot 2 = -6 \]

Step 3: Combine the Products

Now we can combine all the products:

\[ -18x^3 + 12x^2 - 12x^2 + 8x + 9x - 6 \]

Step 4: Simplify

Now, we will simplify this expression by combining like terms:

  1. The \(x^2\) terms: \(12x^2 - 12x^2 = 0\)
  2. The \(x\) terms: \(8x + 9x = 17x\)

So the expression simplifies to:

\[ -18x^3 + 17x - 6 \]

Final Result

The product of the polynomials \((6x^2 + 4x - 3)(-3x + 2)\) in standard form is:

\[ \boxed{-18x^3 + 17x - 6} \]