Schnitzie10 Schnitzie10
  • 16-07-2016
  • Mathematics
contestada

Let g(x)=2x and h(x)=x^2+4. Find the value. (hg)(1)

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olemakpadu
olemakpadu olemakpadu
  • 16-07-2016
g(x) = 2x          h(x) = x² + 4

h(g(x)) = h(2x)

h(x) = x² + 4

h(2x) = (2x)² + 4 = 4x² + 4

hg(1):

hg(x) = h(g(x)) = 4x² + 4

hg(1) = 4*1² + 4 = 4 + 4 = 8

hg(1) = 8
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