can someone check this out?

the product of 7 and of a # is 12 greater than 5 times the #, what is the #?

Question

can someone check this out?

the product of 7 and of a # is 12 greater than 5 times the #, what is the #?

anonymous · Answer

f(2)=3(2)^3 - 4(3)^2 + 2 -1
f(2)=3(8) - 4(9) + 1
f(2)=24 - 36 + 1
Is this what you got so far when you were working out the problem?

anonymous · Answer

$$3x^3  -  4x^2 + x - 1            i get this :   3 (2)^3 - 4 (2)^2 + 2 -1$$

anonymous · Answer

okay, pretty good so far.....

anonymous · Answer

and after that I get , 3 (8) - 4 (4) + 2 - 1 and after I solve it I get 3 as my answer

anonymous · Answer

24 - 16 + 2 - 1
--------------
8 + 2 - 1
--------------
9
How did you get 3?

anonymous · Answer

Because the answer should be 9...

anonymous · Answer

just saw that by mistake i wrote down the wrong numbers.. but thanks could you help me with the other question. with that one i have no idea how to solve it

anonymous · Answer

I am  sorry I can't because I have to go, but I will tag someone who can help you, he's REALLY good at math....

anonymous · Answer

okay thanks

anonymous · Answer

PLEASE HELP @SolomonZelman

anonymous · Answer

thanks for your help tho

anonymous · Answer

np ;p

anonymous · Answer

@phi @amistre64

anonymous · Answer

PLEASE HELP HER