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Savatey [412]
3 years ago
7

Factor: (a+3)^2 -a(a+3)

Mathematics
2 answers:
lutik1710 [3]3 years ago
6 0

Answer:

3(a +3)

Step-by-step explanation:

(a+3)^2 -a(a+3)

FOIL

a^2 +3a+3a+9 -a(a+3)

Distribute

a^2 +3a +3a +9 -a^2 -3a

Combine like terms

3a +9

FACTOR out a+3

(a+3)( a+3 -a)

(a+3) (3)

3(a+3)

Andru [333]3 years ago
4 0

Answer:

3(a+3)

Step-by-step explanation:

Expand the first set of brackets first

(a+3)^2

A^2 + 3a + 3a +9

=A^2 + 6a + 9

Expand the second set of brackets

-a(a+3)

=-a^2 - 3a

Add both sets together

3a + 9

Factorise:

3(a+3)

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Answer

180 - x

Step-by-step explanation:

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Bridget has a bag of skittles that is 3/4 full. If she eats 2/5 of the remaining skittles, how much of the bag did she eat?
Nutka1998 [239]

Bridget eats \frac{x}{10} of the Skittles

<u>Explanation:</u>

Let the number of skittles = x

If the bag has \frac{3}{4}x of the skittles

Then the skittles remaining = x - \frac{3}{4}x

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3 years ago
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Vanyuwa [196]
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104 of Painting: Wreath:104/2 = 52 painted(but because only 42 were prepped, your number will be 42 still)
104 of Painting: Tree:104/3 = 34 painted(As stated above, but with only 9)
104 of Painting: Sleigh:104/17 = 6 painted(this number will overwrite the number of prepped sleighs as only 9 could be painted in the allotted time.)

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Final Results: Wreath - 14
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