meilinsheik
meilinsheik
14-01-2018
Mathematics
contestada
how would I check my answer for this?
Respuesta :
Аноним
Аноним
14-01-2018
Plug in 20 as x in the original equation and simplify. If your answer is correct, you will get something like 5=5. If your answer is wrong, you will get something like 9=5.
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Аноним
Аноним
14-01-2018
Use the remainder theorem
3x - 6 = 0 so x = 2.
If your answer is correct f(2) will equal 20
Try it:-
(2)^3 + 3(2)^2 + 2 - 2 = 8 + 12 + 2 - 2 = 20
so you are correct
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