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Pepsi [2]
2 years ago
12

F(n)=2n-5 ;find f (-8)

Mathematics
2 answers:
lorasvet [3.4K]2 years ago
7 0

Answer:

-21

Step-by-step explanation:

f(-8) = 2(-8)-5 = -21

dedylja [7]2 years ago
7 0
The answer is -21 .....
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Q(a+1) - 2q(a) if q(x) = x²+3x+4​
siniylev [52]

q(x) =  {x}^{2} + 3x + 4

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Step(1)

To find q(a) we just need to put a instead of x in q(x) function.

Let's do it...

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Step (2)

To find q(a+1) we just need to put a+1 instead of x in q(x) function.

Let's do it...

q(a + 1) =  ({a + 1})^{2} + 3(a + 1) + 4 \\

q(a + 1) =  {a}^{2} + 2a + 1 + 3a + 3 + 4 \\

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Step (3)

q(a + 1) - 2q(a) =

{a}^{2} + 5a + 8 - 2 {a}^{2} - 6a - 8 =  \\

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And we're done.

Thanks for watching buddy good luck.

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