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Sav [38]
3 years ago
5

What is the answer to this question? Please give a step by step explanation.

Mathematics
1 answer:
mario62 [17]3 years ago
6 0

Answer:

25

Step-by-step explanation:

8b^2 +2a(4c-b)

Let a = 1/4 b=2 c= -3

8 ( 2)^2 +2(1/4) ( 4*-3 -2)

Parentheses first

8 ( 2)^2 +2(1/4) ( -12 -2)

8 ( 2)^2 +2(1/4) ( -14)

Then exponents

8 ( 4) +2(1/4) ( -14)

Then multiply

32 -7

Subtract

25

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Explain why it would not make sense to approximate 256 using the binomial theorem for the binomial (20 + 5)6.
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The formula for the Binomial Theorem with a power 6 is as:

(x+y)^6=x^6+6x^5y+15x^4y^2+20x^3y^3+15x^2y^4+6xy^5+y^6

Thus, if we plug in 20 for x and 5 for y, our first term itself will be 20^6=64000000 which is much greater than 256 and thus it will not make any sense to use (20+5)^6 to approximate 256 using the binomial theorem.

Also, it will not make any sense to use (20+5)6 as that has no power and we know that Binomial Theorem makes use of Power. Anyway, (20+5)6=150\neq 256.

Our best bet here would be to use the equation with power 8:

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and have x=1 and y=1 which will give us

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Step-by-step explanation:

4. Surface area = 605.76

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<h2><em><u>Mark Brainliest</u></em></h2>
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