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Umnica [9.8K]
3 years ago
14

Fine the product mentally. [(x+1) (x-1)^2

Mathematics
2 answers:
Murljashka [212]3 years ago
5 0
If the product is: [(x+1) (x-1)]^2 , the answer is:
[(x+1) (x-1)]^2 = [x^2-1]^2 = x^4-2x^2+1
Helga [31]3 years ago
5 0

Answer:

x^4 - 2x^2 +1

Step-by-step explanation:

[(x+1) (x-1)]^2

We notice that this is the difference of squares

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

Since we have (x+1) (x-1) , it simplifies to (x^2 -1)

[x^2-1]^2

We know  (a-b)^2  is a^2 -2ab +b^2

[x^2-1]^2 = x^4 - 2x^2 +1

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find the area of triangle qpm. round the answer to the nearest tenth. a. 5.2 square units b. 6.3 square units c. 6.5 square unit
viva [34]
Pls. see attachment. 

We need to solve for the angles of the smaller triangle in order to solve for the angle of the larger triangle which would help us solve the missing measurement of a side.

Given:

51 degrees.

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In the bigger triangle, 4.3 is the hypotenuse. We need to solve for the measurement of the long leg which is the opposite of the 78 degree angle.

We will use the formula:

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Sin(78 deg) * 4.3 = opposite

4.21 = opposite. This is also the height of the triangle.

 

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7 0
3 years ago
Somebody please help me I’ll give you brainiest if you’re right
Pavlova-9 [17]

Answer: I belive the answer would be 18 the only number we have is 52 and 36 the other answers just don't make sense, I am only taking 9th grade but hey I try!

Step-by-step explanation:

6 0
3 years ago
ASAP—-what is the missing value
olga_2 [115]

Answer:

im sure its 139

Step-by-step explanation:

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which gives you 139!

hope it helped! =)

8 0
3 years ago
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