Questions: Perform the indicated operation and simplify if possible by
(3x-4)(x^2-6x-9)
Transcript text: Perform the indicated operation and simplify if possible by
\[
(3 x-4)\left(x^{2}-6 x-9\right)
\]
Solution
Solution Steps
To solve the given expression, we need to perform polynomial multiplication. This involves distributing each term in the first polynomial, \(3x - 4\), across each term in the second polynomial, \(x^2 - 6x - 9\). After distributing, we combine like terms to simplify the expression.
Step 1: Distribute Each Term
To solve the expression \((3x - 4)(x^2 - 6x - 9)\), we begin by distributing each term in the first polynomial across each term in the second polynomial. This involves multiplying each term in \(3x - 4\) by each term in \(x^2 - 6x - 9\).
Step 2: Perform the Multiplication
Multiply \(3x\) by each term in \(x^2 - 6x - 9\):
\(3x \cdot x^2 = 3x^3\)
\(3x \cdot (-6x) = -18x^2\)
\(3x \cdot (-9) = -27x\)
Multiply \(-4\) by each term in \(x^2 - 6x - 9\):
\(-4 \cdot x^2 = -4x^2\)
\(-4 \cdot (-6x) = 24x\)
\(-4 \cdot (-9) = 36\)
Step 3: Combine Like Terms
Combine the results from the multiplication:
\(3x^3\)
\(-18x^2 - 4x^2 = -22x^2\)
\(-27x + 24x = -3x\)
\(36\)
Final Answer
The simplified expression is:
\[
\boxed{3x^3 - 22x^2 - 3x + 36}
\]