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lianna [129]
3 years ago
6

i'm doing operations with complex numbers and i understand everything until there's a number in front of the parentheses so plea

se help :(
Mathematics
1 answer:
UkoKoshka [18]3 years ago
5 0
It a number is in front of a parentheses that just means you have to multiply everything inside the parentheses by the number in front
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Answer:

  5

Step-by-step explanation:

The left side simplifies to ...

  2x +16

The right side simplifies to ...

  2x +21 -__

The x-terms are already equal. To make the constant terms equal, we want ...

  16 = 21 -__

The blank must be filled with the value 21-16 = 5 to make the statement true.

5 goes in the blank.

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2 which of the following is a perfect cube<br> a) 400 -<br> D. 3375–<br> C 8000 -
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Answer:

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4 years ago
1st. (2 root 2 + root 3 ) ( 2 root 3 - root 2)
satela [25.4K]

Answer:

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2nd: 35*root2 + 115

3rd: 24*root2 - 20*root6 + 15*root3 - 18

4th: 17*root6 - 38

5th: 13*root10 - 42

Step-by-step explanation:

To simplify these expressions we need to use the distributive property:

(a + b) * (c + d) = ac + ad + bc + bd

So simplifying each expression, we have:

1st.

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2nd.

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3rd.

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= 8*root18 - 20*root6 - 6*3 + 15root3

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4rd.

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5th.

(root 10 - 3 ) ( 4 - 3 root 10)

= 4*root10 - 3*10 - 12 + 9*root10

= 13*root10 - 30 - 12

= 13*root10 - 42

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Carole makes an array of magnets on her refrigerator she makes7 rows with 8 magnets in each row which of the following shows how
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