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IrinaK [193]
2 years ago
8

Solve: (a+b+c) (a+b-c)

Mathematics
2 answers:
Katen [24]2 years ago
7 0

Answer:

<h2><u><em>a²+2ab+b²-c²</em></u></h2>

Step-by-step explanation:

Solve:

(a+b+c) (a+b-c)=

(a²+ab-ac+ab+b²-bc+ac+bc-c²)=

a²+ab-ac+ab+b²-bc+ac+bc-c²=

a²+2ab+0ac+b²+0bc-c²=

a²+2ab+b²-c²

zvonat [6]2 years ago
4 0

Answer:

The answer is a² + 2ab + b² - c²

Step-by-step explanation:

(a + b + c) × (a + b - c)

a² + ab - ac + ba + b² - bc + ca + cb - c²

a² + ab + ba - ac + ca + b² - bc + cb - c²

a² + 2ab + b² - c²

Thus, The answer is a² + 2ab + b² - c²

<u>-TheUnknownScientist</u><u> 72</u>

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Find the slant height x of the pyramid shown, to the nearest tenth.<br> 5 mm<br> 9 mm<br> 9 mm
MArishka [77]

The slant height of the pyramid can be calculated using Pythagoras theorem. Therefore, the slant height is 6.7 mm

<h3>How to find slant height of a pyramid?</h3>

The slant height x, can be found using Pythagoras theorem,

Therefore,

c² = a² + b²

where

  • c = hypotenuse
  • a and b are other two legs.

Therefore,

x² = 4.5² + 5²

x² = 20.25 + 25

x² = 45.25

x = √45.25

x = 6.72681202354

x = 6.7 mm

learn more on pyramid here: brainly.com/question/11805304

#SPJ1

4 0
1 year ago
Which equation represents a quadratic function with a leading coefficient of 2 and a constant term of –3?
Norma-Jean [14]

Answer:

D . f(x) =2x²+3x-3

Step-by-step explanation:

Given the equation as

f(x)=2x²+3x-3

The leading coefficient is in the term with the highest power , x², which is 2

The constant term is -3

5 0
3 years ago
Miss Sandy is fencing in her rectangular backyard, which is 3x23x2 feet wide and 4xy+5x3y24xy+5x3y2 feet long. a.) Find the peri
liraira [26]
<span>3x23x2= 138 feet wide by 28xy + 10x6y + 2 feet long B) purchase 140 feet X (28xy + 10x6y) fencing</span>
6 0
2 years ago
Which of the following are geometric series?
Temka [501]

Answer:

-256 +64 - 16 + 4 - 1

Step-by-step explanation:

A series is the summation of all the terms in a sequence.

So it is only the last three options that qualify to be a series.

The series 2 +5 + 8 + 11 + 14 + 17 has no common ratio. It is not geometric.

The series 1+1+2+3+5+ 8 +13 +21 also has no common ratio. It is not geometric.

The series -256 +64 - 16 + 4 - 1 has a common ratio of

r=\frac{64}{-256}=-\frac{1}{4}

There the only series that is geometric is.

-256 +64 - 16 + 4 - 1

6 0
3 years ago
Read 2 more answers
Can anyone help me with this?
Lana71 [14]
216 / 48 = 4.5 hours
return
216 / 54 = 4 hours

total 4.5 + 4 = 8.5 hours

answer
B. 8.5 h
8 0
2 years ago
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