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andreadesirepen 3 years ago Does anyone understand this? If f(x) = 4x + 1 and g(x) = x2 – 2x + 1, what is f(g(x)) ? 4x2 – 8x + 5 4x2 + 2x + 2 x2 + 2x + 2 x2 – 2x + 2

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1. math456

f(g(x)) meanign plug the value of g(x) in f(x)

2. math456

f(g(x))=4(x2-2x+1)+1 and solve!

3. andreadesirepen

would that be, 8x-8x+4+1

4. andreadesirepen

? sorry i dont get it

5. math456

4x^2-8x+5

6. math456

u just plug the g(x) value in f(x) fiction. Meaning wherever you see x in f(x) plug the value of g(x)

7. andreadesirepen

why is it to the 2nd power?

8. math456

what do u mean by 2nd power?

9. andreadesirepen

the 4x^2

10. math456

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11. math456

whereever you see x in the f(x) function you need to plug the g(x) value which is x^2-2x+1!

12. andreadesirepen

ohhhhhhhhhhh, thanks!!! I just find it hard to understand when its typed

13. math456

alright, you r welcome ^^

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