anon83 anon83
  • 09-10-2018
  • Mathematics
contestada

if f(x) = 2x^2 - 3x + 4, then f(x + 3) is equal to

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jimrgrant1 jimrgrant1
  • 09-10-2018

f(x + 3) = 2x² + 9x + 13

substitute x = x + 3 into f(x)

f(x + 3) = 2(x + 3)² - 3(x + 3) + 4 = 2(x² + 6x + 9) - 3x - 9 + 4

f(x + 3 ) = 2x² + 12x + 18 - 3x - 9 + 4 = 2x² + 9x + 13



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