## tiawanad 2 years ago pLEASE CHECK MY WORK TO SEE IF i AM CORRECT 28x^2-6x+1 28(-4)^2-6(4)+1 Then I need help

(gof) (-4)

2. amistre64

you need to use -4 in each x spot ...

I thought that I did that above 28(-4)-6(-4)+1 right

sorry for got the 28(-4)^2

5. amistre64

better, and remember that -*- = +

so that would be 28*4=112^2 right

7. amistre64

28(-4)^2 -6(-4) + 1 28(16) +24 + 1 280 + 120 + 48 +25

8. amistre64

28*4 = 80 + 32 = 112 yes

so 112-24+1=89 but my test said that was wrong so would you add 112+24+1

10. amistre64

the 112 still needs to be multiplied by the other 4

11. amistre64

112*4 = 400+40+8

so 448

13. amistre64

and its not -24 .. -6(-4) = 24, to negatives gets a postive

that is right two negatives make positive so the answer would be 448 correct

15. amistre64

448 + 24 + 1 = ?

Ok I have four problems that goes with the pair of functions can you help me and I wont bug you no more tonight

18. amistre64

448 + 24 + 1 468 + 4 + 1 472 + 1 = 473

19. amistre64

i cant make that promise, its getting late over here where i am and il have to leave soon

f(x)=3x g(x)=7x^2-4x+6

21. amistre64

post it up as a new question and see if anyone bites :)