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Kryger [21]
3 years ago
8

Tìm x,y thỏa mãn: x^2-2xy+3y-5x+7=0

Mathematics
1 answer:
STALIN [3.7K]3 years ago
7 0

I think there's an error with this question. Mind to check it back and tell me the detail?

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Duke and Mary collect stamps. Duke has 1,364 stamps, and Mary has 1,808 stamps. How many stamps do they have in all?
Alex73 [517]

Answer:

Mary and Duke have 3,172 stamps altogether

1,364 + 1,808 = 3,172

8 0
3 years ago
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Multiply the following polynomials
Sophie [7]

Answer  (2x + 7) • (x2 - 2)

Step-by-step explanation:

please give me brainlest!!

Step by step solution :

Step  1  :

Trying to factor as a Difference of Squares :

1.1      Factoring:  x2-2

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

        A2 - AB + BA - B2 =

        A2 - AB + AB - B2 =

        A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check : 2 is not a square !!

Ruling : Binomial can not be factored as the difference of two perfect squares.

Final result :

 (2x + 7) • (x2 - 2)

6 0
3 years ago
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The perimeter of each face of a Rubik's cube is 22.2 centimeters.What is the length of an edge of a Rubik's cube? This is dividi
jek_recluse [69]
Divide 22.2 by 4 since the perimeter is the outside and there are 4 edges 
4 0
4 years ago
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The total mass of 500 crayons is 1 kilogram. What is the mass of each crayon in grams?
Ber [7]

Answer:

I believe it is 2 grams.

Step-by-step explanation:

there are 1000 grams in 1 kg, there are 500 crayons, therefore each crayon weighs 2 grams

7 0
3 years ago
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There are 3785 mL in 1 gallon.There are 4 quarts in 1 gallon. How many mL are in a quart
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Answer:

946.353

Step-by-step explanation:


4 0
3 years ago
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