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OpenStudy (anonymous):
g(x) = 5x2 - 4x h(x) = 3x + 9 Find: g(h(x))
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OpenStudy (anonymous):
\[45^2+15x+45\]
OpenStudy (anonymous):
which can be simplified into: \[15(3x^x+x+3)\]
OpenStudy (hoblos):
g(h(x)) = 5(3x+9)^2 -4(3x+9) = 5( 9x^2 + 54x +81) - 12x -36 = 45x^2 + 270x + 405 -12x -36 = 45x^2 + 234x + 269
OpenStudy (anonymous):
^ he's right...
OpenStudy (anonymous):
I'm being really stupid today... '-.-
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OpenStudy (hoblos):
sorry it 369 instead of 269
OpenStudy (anonymous):
thanks both of you
OpenStudy (hoblos):
45x^2 + 234x + 369
OpenStudy (hoblos):
my pleasure XD
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