Breezebird117
Breezebird117 Breezebird117
  • 23-02-2019
  • Mathematics
contestada

I keep forgetting the process for this: 3(x^2 + 5)(x^2 - 5) Can someone help?

Respuesta :

jimrgrant1 jimrgrant1
  • 23-02-2019

Answer:

see explanation

Step-by-step explanation:

Note that (x² + 5)(x² - 5) are the factors of a difference of squares

a² - b²  = (a + b)(a - b)

with a = x² and b = 5, hence

(x² + 5)(x² - 5) = (x²)² - 5² = [tex]x^{4}[/tex] - 25, thus

3([tex]x^{4}[/tex] - 25) = 3[tex]x^{4}[/tex] - 75

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