(6x^7 - 8x^2)(4x-3)(-6x^2-7x-11)

Question

Perform the indicated operations and write the result in standard form. Need help with this question 

Answer 1

( 6x⁷ - 8x²)(4x -3)(-6x²  - 7x -11)

 

Starting on the left multiply the first two sets of parenthesis:

 

(24x⁸ -18x⁷ -32x³ + 24x²)(-6x² -7x -11)

 

Multiply each term in first parenthesis by each term in second parenthesis:

 

-144x¹⁰ - 168x⁹ - 264x⁸

 

               108x⁹ + 126x⁸ + 198x⁷

 

                                                  192x⁵ + 224x⁴ - 352x³

 

                                                               -144x⁴ - 168x³ - 264x²

 

=  144x¹⁰ - 60x⁹ - 138x⁸ + 198x⁷ + 192x⁵ +80x⁴ - 520x³ - 264x²

 

That is the answer provided all of my calculations are correct