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djyliett [7]
3 years ago
8

30 points if you answer this question and please show work !

Mathematics
1 answer:
ASHA 777 [7]3 years ago
8 0
h(x)=\dfrac{f(x)}{g(x)}=\dfrac{x^2+x-20}{x+5}=\dfrac{x^2+x+4x-4x-20}{x+5}=\\\\\\=
\dfrac{x^2+5x-4x-20}{x+5}=\dfrac{x(x+5)-4(x+5)}{x+5}=\dfrac{(x+5)(x-4)}{x+5}=\\\\\\=\boxed{x-4}

We see, that g(x) is in denominator, so:

g(x)\neq0\\\\x+5\neq0\\\\\boxed{x\neq-5}

and the domain of h(x) i<span>s the set of all real numbers without x=-5.
</span>
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