saileshpoddar3
saileshpoddar3 saileshpoddar3
  • 13-10-2020
  • Mathematics
contestada

simplify (5x-7) (2x+3) (7x-8)

Respuesta :

jimrgrant1 jimrgrant1
  • 13-10-2020

Answer:

70x³ - 73x² - 155x + 168

Step-by-step explanation:

Given

(5x - 7)(2x + 3)(7x - 8) ← expand the first pair of factors using FOIL

= (10x² + x - 21)(7x - 8)

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

10x² (7x - 8) + x(7x - 8) - 21(7x - 8) ← distribute the 3 parenthesis

= 70x³ - 80x² + 7x² - 8x - 147x + 168 ← collect like terms

= 70x³ - 73x² - 155x + 168

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