makaylablanc2005 makaylablanc2005
  • 01-04-2020
  • Mathematics
contestada

What is the resulting polynomial when
3x + 7 is multiplied by 2x – 6?
© 5x+1
B 6x - 42
© 6x2 - 4x - 42
D 6x2 + 9x - 42

Respuesta :

jimrgrant1 jimrgrant1
  • 01-04-2020

Answer:

C

Step-by-step explanation:

Given

(3x + 7)(2x - 6)

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

3x(2x - 6) + 7(2x - 6) ← distribute both parenthesis

= 6x² - 18x + 14x - 42 ← collect like terms

= 6x² - 4x - 42 → C

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