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alexgriva [62]
3 years ago
14

Let f(x)=x^2+x+2 and g(x)=2x^2+5. find f(g(x)). Show each step of your work. Please help me!

Mathematics
1 answer:
hodyreva [135]3 years ago
5 0
Just let every x in f(x) be g(x)
it means:
f(g(x))=(2x^2+5)^2+(2x^2+5)+2
         =4x^4+20x^2+25+2x^2+5+2
         =4x^4+22x^2+32

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