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mash [69]
3 years ago
11

Làm ơn hãy giúp tôi (a+b)² (a-b)²

Mathematics
2 answers:
marysya [2.9K]3 years ago
8 0

Answer:

(a + b) ^{2}  =  {a}^{2}  + 2ab +  {b}^{2}  \\ (a - b) ^{2}  =  {a {}^{2}  - 2ab +  {b}}^{2}

Step-by-step explanation:

hopethe answer helped you :)

d1i1m1o1n [39]3 years ago
4 0

Answer:

(a+b)² = a²+2ab+b²

(a-b)² = a²-2ab+b²

Step-by-step explanation:

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Mr. jones needs 126 pieces of construction paper to do an art project with the students each he has a full pack of 50 sheets of
fredd [130]

Answer:56

Step-by-step explanation:

Because all he has is 50 sheets

8 0
4 years ago
Suzie bought an antique jewelry box for $34.50. It originally cost $8.75 when it was made. Its value has increased $0.75 a year
timama [110]

Answer:

if she would sell it for what it is worth now she would make $36.50

Step-by-step explanation:

0.75 x 83 = 62.5

62.5 + 8.75 = 71

71 is how much it is worth now

71 - 34.5 = 36.5

36.50 is how much she would make

7 0
3 years ago
Read 2 more answers
1/5 of the shoes in a factory are green. If you pick a shoe, replace it, pick another shoe and replace it, and pick a third shoe
Ne4ueva [31]

Answer:

The probability that none of the three shoes selected are green = 64/125

Step-by-step explanation:

If we have 1/5 of shoes being green, then the number of non-green shoes = 1-1/5 = 4/5

Now, this is a probability with replacement.

probability of the first shoe since it’s not green = 4/5

probability of second shoes since it’s not green = 4/5

probability of third shoe since it’s not green = 4/5

Now, the probability that none of the shoes are green = 4/5 * 4/5 * 4/5 = 64/125

7 0
3 years ago
Domain and range of: s={(-9,6),(5,6),(-3,0)}
dem82 [27]

Answer:

domain={-9,5,-3}

range={6,0}

3 0
3 years ago
Match the phenomenal expression on the left with the simplified version on the right
nalin [4]

Given the polynomial expression:

(y + 5)²

(y - 5)(y + 5)

Let's simplify each of the given expression:

a.) (y + 5)²

The given equation is a factor of a perfect square trinomial. For this type of expression, the following is the formula for expanding it.

\text{ (a+b)}^2\text{ = }a^2\text{ + 2ab + }b^2

We get,

\mleft(y+5\mright)^2=(y)^2+2(y)(5)+(5)^2(y+5)^2=y^2+10y+25

b.) (y - 5)(y + 5)

To be able to simplify the following expression. We will be using the formula for the difference of two squares.

(a+b)(a-b)=a^2-b^2

We get,

\mleft(y-5\mright)\mleft(y+5\mright)=(y)^2-(5)^2(y-5)(y+5)=y^2-25^{}

8 0
2 years ago
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