itsfortnite6
itsfortnite6 itsfortnite6
  • 12-10-2020
  • Mathematics
contestada

please expand it
(c-7d)2

Respuesta :

jimrgrant1 jimrgrant1
  • 12-10-2020

Answer:

c² - 14cd + 49d²

Step-by-step explanation:

Given

(c - 7d)²

= (c - 7d)(c - 7d)

Each term in the second factor is multiplied by each term in the first factor, that is

c(c - 7d) - 7d(c - 7d) ← distribute both parenthesis

= c² - 7cd - 7cd + 49d² ← collect like terms

= c² - 14cd + 49d²

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