Need help pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeWhat is (f⋅g)(x)?

Mathematics

1 answer:

Sergio039 [100]3 years ago

5 0

just need to multiply and axpand ?

$( {x}^{2} + 2)( {x}^{3} - 4x + 2) = {x}^{2} ({x}^{3} - 4x + 2) + 2({x}^{3} - 4x + 2) \\ = {x}^{5} - 4 {x}^{3} + 2 {x}^{2} + 2 {x}^{3} - 8x + 4 \\ = {x}^{5} - 2 {x}^{3} + 2 {x}^{2} - 8x + 4$

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When comparing answers on a group assignment, Jenny and Jeremy found that their answers did not match. Part 1: Who do you believ

vitfil [10]

PART 1:

Jeremy gives the correct answer.

The value of 0.41 [with a bar over the digit 4 and 1] shows that the digit 4 and 1 are reoccurring = 0.414141414141414141....

Jenny's assumption of 41/100 will give a decimal equivalency of 0.41 [without a bar over digit 4 and 1]. This value is not a reoccurring decimal value.

PART 2:

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PART 3:

As mentioned in PART 1, the result of converting 41/100 into a decimal is 0.41 [non-reoccuring decimal] while converting 41/99 into a decimal is 0.41414141... [re-occuring decimal]. The conjecture in PART 1 is correct