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3 years ago

(a-b) ( a+b) simplify

Mathematics

1 answer:

BlackZzzverrR [31]3 years ago

4 0

Answer:

$a^2 - b^2$

Step-by-step explanation:

1. $(a)(a)+(a)(b)+(-b)(a)+(-b)(b)$

2. $a^2 + ab - ab - b^2$

3. $a^2 - b^2$

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Simplify<br> 21x^6 y^5<br> 14x^2y^9

PIT_PIT [208]

Answer:

$\frac{3x^{4} }{2y^{4} }$

Step-by-step explanation:

Factor out 7 from top and bottom :

$\frac{7(3x^6y^5)}{7(2x^2y^9)}$

Divide top and bottom by 7 :

$\frac{3x^6y^5}{2x^2y^9}$

Simplify :

$\frac{x^6}{x^4}=x^{2}$

Simplify :

$\frac{y^5}{y^9} = y^{-4} = \frac{1}{y^{4} }$

Collect everything together :

$\frac{3x^{4} }{2y^{4} }$

Hope this helped and have a good day

5 0

2 years ago

- 20 + 5p - 7z<br><br> 8x - 20y - 10

Vladimir79 [104]

Answer:

Step-by-step explanation:

Use the given functions to set up and simplify

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6 0

3 years ago

In 2009, a town's population was about 9,000 residents. In 2014, the population was about 12,500 residents. Which linear model r

NeX [460]

Answer:

Population function (Based on 2007) = 7,600 + 700n

Step-by-step explanation:

Given:

Population in 2009 = 9,000

Population in 2014 = 12,500

Computation:

Increase in population per year = [12,500 - 9,000] / 5

Increase in population per year = 700

Population in 2007 = 9,000 - [2 x 700]

Population in 2007 = 7,600

Population function (Based on 2007) = 7,600 + 700n

n = number of year

6 0

3 years ago

Read 2 more answers

14 a and b please and thank u

Murrr4er [49]

I don't know the answer, but I suggest downloading the app: PhotoMath. It scans a math problem and shows you how to complete the problem. I hope this helped~!

7 0

3 years ago

What is 10/n = 15/45 solved?

Lina20 [59]

The answer would be 3.33333. I think because 10*15= 150. Then you would divide it by 45 and you would get 3.333. If you get it wrong im sorry.

8 0

3 years ago

(a-b) ( a+b) simplify​

(a-b) ( a+b) simplify