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liraira [26]
3 years ago
8

11, 7, 3, -1,...

Mathematics
1 answer:
Bess [88]3 years ago
3 0

The mathematical formula to solve this is :

f(n)= f1 + (n-1)d

We have:f(n)= 11 + (n-1)-4

f(n)= 11 -4n +4

f(n)=15 -4n

The right answer is D.

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Inga [223]

Answer:

1. x^4 -x^3 -4x^2 -3

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f(x) = x^4 -x^2 +9

g(x) = x^3 +3x^2 +12

We are subtracting

f(x) -g(x) =x^4 -x^2 +9 - ( x^3 +3x^2 +12)

Distribute the minus sign

x^4 -x^2 +9 -  x^3 -3x^2 -12

I like to line them up vertically

x^4      -x^2 +9

-  x^3 -3x^2 -12

-------------------------

x^4 -x^3 -4x^2 -3


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-21.2 - (-7.4)

-21.2 + 7.4

-13.8

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