westsidehotboy westsidehotboy

30-04-2021
Mathematics

contestada

If f(x) = 2x^2 - 4x - 3' and `g(x) = (x - 4)(x + 4)", find 'f(x) - g(x).

If fx 2x2 4x 3 and gx x 4x 4 find fx gx class=

Respuesta :

jimrgrant1 jimrgrant1

30-04-2021

Answer:

B

Step-by-step explanation:

f(x) - g(x)

= 2x² - 4x - 3 - (x - 4)(x + 4) ← expand using FOIL

= 2x² - 4x - 3 - (x² - 16) ← distribute by - 1

= 2x² - 4x - 3 - x² + 16 ← collect like terms

= x² - 4x + 13 → B

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