anonymous
  • anonymous
given f(x)=4x^2-3 and g(x)=-3x^2+4,find (f.g)(x) AWAAAAARDDDD!!!1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
\[f\circ g\] or \[f\times g\]?
anonymous
  • anonymous
F x g @satellite73
anonymous
  • anonymous
put a times sign between them use parentheses

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anonymous
  • anonymous
what do you mean like (fxg)?? @satellite73
anonymous
  • anonymous
can u demonstrate because i have 7 problems like this and i want to get a good grade @satellite73
SolomonZelman
  • SolomonZelman
what is ` (4x²-3) × (-3x²+4) ` ?
SolomonZelman
  • SolomonZelman
the first part, the `4x²-3` is f, and the second part, the `-3x²+4 `, is the g. that is what they mean by f × g
SolomonZelman
  • SolomonZelman
all I am trying to say that in the following case, \(\large\color{black}{ \displaystyle f(x)=4x^2-3 ~~~~{\rm and}~~~~ g(x)=-3x^2+42}\) the (f×g)(x) is going to be \(\large\color{black}{ \displaystyle (f×g)(x)=\left(4x^2-3\right)\times \left(-3x^2+42\right)}\)
SolomonZelman
  • SolomonZelman
so you are to multiply what f(x) is equal to, BY what g(x) is equal to.
SolomonZelman
  • SolomonZelman
is this making some sense?
anonymous
  • anonymous
yes it is ! so do i basically simplify it? @SolomonZelman
SolomonZelman
  • SolomonZelman
yes.
SolomonZelman
  • SolomonZelman
when you expand that product, tell me what you get:)
anonymous
  • anonymous
would it be something like 4x^2+2x-3? pr 6x^2-3 or just 4x^3-2 ?????? @SolomonZelman
SolomonZelman
  • SolomonZelman
you are multiplying....
SolomonZelman
  • SolomonZelman
(4x²−3) × (−3x²+42)
anonymous
  • anonymous
idk this topic sir , its really confusing @SolomonZelman
anonymous
  • anonymous
for this question : |dw:1435632928544:dw|
anonymous
  • anonymous
@SolomonZelman ^^^^
SolomonZelman
  • SolomonZelman
8x³-12x² it would be for the problem you posted just now
SolomonZelman
  • SolomonZelman
i suggest to go back and review multiplication of variables with different coefficients and powers, factoring and all that.

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