shawtyshawnna13 shawtyshawnna13
  • 04-09-2018
  • Mathematics
contestada

Simplify the expression (5r - 7)(9r^2-4r-8)

Simplify the expression 5r 79r24r8 class=

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Аноним Аноним
  • 04-09-2018

For this problem, you will need to foil. Multiply each term in the first expression (5r-7) by each term in the second expression (9r^2-4r-8)

When we foil, we get:

[tex] 45r^3-20r^2-40r-63r^2+28r+56 [/tex]

Combine like terms:

[tex] 45r^3-83r^2-12r+56 [/tex]

This is your final answer since you can do nothing further to simplify.

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