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nata0808 [166]
3 years ago
5

Find (f*g)(x) when f(x)=x^2-7x+12 and g(x)=7/x^2-16

Mathematics
1 answer:
AleksandrR [38]3 years ago
7 0

Answer:

  (f\cdot g)(x)=\dfrac{7x-21}{x+4}

Step-by-step explanation:

(f\cdot g)(x)=f(x)\cdot g(x)=(x^2-7x+12)\cdot\dfrac{7}{x^2-16}\\\\=7\dfrac{(x-3)(x-4)}{(x+4)(x-4)}=\dfrac{7(x-3)}{x+4}\\\\=\dfrac{7x-21}{x+4}

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