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igor_vitrenko [27]
2 years ago
13

For all a and b, what is the sum of (a-b)² and (a+b)²​

Mathematics
2 answers:
AVprozaik [17]2 years ago
7 0

Step-by-step explanation:

Expand both classic quadratics and combine like terms to find the sum:

(a−b)2+(a+b)2

bija089 [108]2 years ago
4 0

Answer:

2a² + 2b²

Step-by-step explanation:

(a - b)² + (a + b)² ← expand both factors using FOIL

= a² - 2ab + b² + a² + 2ab + b² ← collect like terms

= 2a² + 2b²

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How many solutions can be found for the equation 3y + 5 - 2y = 11
julsineya [31]

Answer:

There is only one solution, y = 6

Step-by-step explanation:

3y + 5 - 2y = 11

<u>Step 1:  Combine Like Terms</u>

3y + 5 - 2y = 11

y + 5 = 11

<u>Step 2:  Subtract 5 from both sides</u>

y + 5 - 5 = 11 - 5

y = 6

Answer:  There is only one solution, y = 6

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4 years ago
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inysia [295]

Answer:

D. <F = 65 degrees

Step-by-step explanation:

First off, we know that the measures of <F and the angle adjacent to it add to 90 degrees, as indicated by the right angle. They are complementary angles.

The complementary angle of <F has an intercepted arc of 50 degrees. Because the angle is on the opposite end of the circle, it is half of the measure of the arc. Therefore, it is 25 degrees.

Because this angle and <F sum to 90, just subtract 90-25 to find <F.

<F = 65 degrees

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3 years ago
Which of the following is the result of the operation below?
Arlecino [84]
I don’t really know
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3 years ago
In ΔQRS, q = 4.9 cm, r = 7.1 cm and ∠S=70°. Find the area of ΔQRS, to the nearest 10th of a square centimeter.
IgorC [24]

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3 years ago
620 prime factorization
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Prime factorization of 620:

620

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