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eli123
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anonymous
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the first one just means subtract
use parentheses
\[5x+4(2x+5)\]

anonymous
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you get a polynomial, in fact you get a line
the domain of any polynomial is all real numbers

anonymous
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the second one just means divide
\[\frac{5x+4}{2x+5}\]

anonymous
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to find the domain, set \(2x+5=0\) and solve for \(x\)
then say "all real numbers except your answer"

eli123
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IS THE FIRST ONE 3X1?

eli123
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1/3

eli123
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and the second one is 4/5

anonymous
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yes, the first one is \(3x1\)

eli123
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and domain is x not equal to 5/2

anonymous
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that is for the domain of \(\frac{f(x)}{g(x)}\) yes
domain for \(a\) is all real numbers

eli123
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yes

anonymous
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i am not sure what you mean by "second one is 4/5"

eli123
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for b when i divide i get that answer

anonymous
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looks like \(b\) has two parts

anonymous
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first answer is \(\frac{5x+4}{2x+5}\)

anonymous
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that is the entire answer
you cannot simplify this in any way

eli123
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so for both answers i leave them as functions? not fractions