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zhuklara [117]
3 years ago
15

Expand 4y(y-3)

Mathematics
2 answers:
Oduvanchick [21]3 years ago
8 0

Answer:

4*y^2 - 12*y

Step-by-step explanation:

4y(y-3) = 4y*y - 4y*3 = 4*(y^2) - 12*y

const2013 [10]3 years ago
7 0

Answer:

4y(y-3)

4y^2-12y

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<h3>Answer:  C) 6</h3>

====================================================

Explanation:

The weird looking E symbol is the greek uppercase letter sigma. It refers to a sum.

It tells us to add up terms in the form (-1)^n*(3n+2) where n is an integer ranging from n = 1 to n = 4.

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

If n = 1, then we have

(-1)^n*(3n+2) = (-1)^1*(3*1+2) = -5

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If n = 2, then

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Let B = 8 since we'll use this later as well

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If n = 3, then

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If n = 4, then

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Let D = 14.

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

We'll add up the values of A,B,C,D to get the final answer

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