Question

Find (f-g)x if
-I will type it-
could you walk me through it please?

Answer 1

(f-g)x is the same thing is
f(x)-g(x)

Answer 2

i have no clue

Answer 3

do you know how to subtract polynomials?
like, maybe by terms?

Answer 4

@jhonyy9

Answer 5

like... subtract both equations? thats it?

Answer 6

yes just subtract one from the other

Answer 7

\(\color{#0cbb34}{\text{Originally Posted by}}\) @artlover03
\[f(x)=x^4+3x^3+x^2+5 \]
\[g(x)=2x^3-4x^2-7x-9\]
\(\color{#0cbb34}{\text{End of Quote}}\)
you missed the equal sign from there

Answer 8

f(x)=x4+3x3+x2+5

g(x)=2x3−4x2−7x−9

Answer 9

there we go :)

Answer 10

so you would do
x^4 + 3x^3 +x^2 +5 -(2x^3 -4x^2 -7x -9)
and so then you can change it to
x^4 + 3x^3 +x^2 +5 -2x^3 +4x^2 +7x+9
because paranthethis are annoying

Answer 11

subtract the same terms

Answer 12

and it would be easier to get the similar exponents together
so x^4 +3x^3 -2x^3 +x^2 +4x^2 +7x +9+5

Answer 13

\(\color{#0cbb34}{\text{Originally Posted by}}\) @jhonyy9
subtract the same terms
\(\color{#0cbb34}{\text{End of Quote}}\)
like 3x^3 -2x^3

Answer 14

@artlover03
do you know how to subtract those ^

Answer 15

\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531
and it would be easier to get the similar exponents together
so x^4 +3x^3 -2x^3 +x^2 +4x^2 +7x +9+5
\(\color{#0cbb34}{\text{End of Quote}}\)
please explain here how you get the +4x^2 from -(-4x^2)
ok ?

Answer 16

so, two negatives multiplied together is a positive
a negative and a positive multiplied together is a negative

Answer 17

so, negative 1 times negative 4x^2
would go positive

Answer 18

\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531
so, two negatives multiplied together is a positive
a negative and a positive multiplied together is a negative
\(\color{#0cbb34}{\text{End of Quote}}\)
ty - step by step pls .

Answer 19

sorry

Answer 20

@artlover03
do you understand how to subtract/add the like terms

Answer 21

yes wait.. so im doing\[x^4+3x^3+x^2+5-2x^3+4x^2+7x+9\]
im not understanding why the symbols changed. where do you multiply it?

Answer 22

\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531
so you would do
x^4 + 3x^3 +x^2 +5 -(2x^3 -4x^2 -7x -9)
and so then you can change it to
x^4 + 3x^3 +x^2 +5 -2x^3 +4x^2 +7x+9
because paranthethis are annoying
\(\color{#0cbb34}{\text{End of Quote}}\)
look here above pls .

Answer 23

i understand subtracting like terms, not wjere the symbols changed

Answer 24

^^^^

Answer 25

why are there parenthesis?

Answer 26

because you're subtracting one expression from the other, not just the first term
so, you have to add the parentheses to show that it's being subtracted by that whole thing

Answer 27

ah i see that: hold on while i get the answer

Answer 28

\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531
because you're subtracting one expression from the other, not just the first term
so, you have to add the parentheses to show that it's being subtracted by that whole thing
\(\color{#0cbb34}{\text{End of Quote}}\)
good job - explained like a math teacher - congrats !

Answer 29

is it\[x^4+3x^3+5x^2+7x+14\]

Answer 30

yesiii
nice

Answer 31

thank you so much for all your guys help!

Answer 32

yw~