Question

rewrite without parentheses.
$-9x^{6}(-9x^{3}+2x - 4)$
simplify your answer as much as possible.

Explanation:

Step1: Distribute $-9x^6$ to each term

Multiply $-9x^6$ by $-9x^3$, $2x$, and $-4$ respectively.
$(-9x^6)(-9x^3) + (-9x^6)(2x) + (-9x^6)(-4)$

Step2: Calculate each product

Use exponent rule $x^a \cdot x^b = x^{a+b}$ and multiply coefficients.
$81x^{6+3} - 18x^{6+1} + 36x^6$

Step3: Simplify exponents

Compute the sum of exponents for each term.
$81x^9 - 18x^7 + 36x^6$

Answer:

$81x^9 - 18x^7 + 36x^6$