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Fed [463]
3 years ago
8

Find the inverse of the function y=2^3-5x

Mathematics
1 answer:
Korvikt [17]3 years ago
6 0

Answer:

Step-by-step explanation:

To find the inverse, switch x and y, then solve for y

y=2^3-5x

x=2^3-5y

x-2^3=-5y

-(x/5)+((2/3)/5)=y

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I need help with this please. :)
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9514 1404 393

Answer:

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2.

  \displaystyle\frac{8x-4}{x+3}-\frac{12x-20}{2x+6}=\frac{8x-4}{x+3}-\frac{4(3x-5)}{2(x+3)}=\frac{8x-4-2(3x-5)}{x+3}\\\\=\frac{8x-4-6x+10}{x+3}=\frac{2x+6}{x+3}=\frac{2(x+3)}{x+3}=\boxed{2}

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3.

  \displaystyle\frac{(2x+10)^7}{(x+5)^6}=\frac{(2(x+5))^7}{(x+5)^6}=2^7(x+5)^{7-6}=128(x+5)\\\\=\boxed{128x+640}

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