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PtichkaEL [24]
2 years ago
10

About how long will it take Karen’s investment to double if it earns 18% interest compounded annually? A. 4 years B. 5 years C.

7 years D. 8 years
Mathematics
1 answer:
snow_tiger [21]2 years ago
8 0

Answer:

It is A

Step-by-step explanation:

I have sacrificed my self for the greater good of helping others beat the beast known as edge2020

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Easy
differnce of 2 perfect squares
a²-b²=(a+b)(a-b)

in this case
x⁴=(x²)²
16=4²

(x²)²-4²=(x²+4)(x²-4)
x²-4 can be factored since 4=2²
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complete factored form is
(x²+4)(x+2)(x-2)
gegroup to seperate (x+2)
(x+2)[(x²+4)(x-2)]
(x+2)p(x)

p(x)=(x²+4)(x-2)
expanded
p(x)=x³-2x²+4x-8
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Read 2 more answers
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Answer:

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