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Burka [1]
3 years ago
12

What is the product of 2x + y and 5x – y + 3?

Mathematics
2 answers:
Radda [10]3 years ago
5 0

Answer:

The product of 2x + y and 5x – y + 3 is 10x^2+ 3xy + 6x - y^2 + 3y

Step-by-step explanation:

The product of the two expressions can be expressed mathematically as;

(2x +y) (5x -y +3)

To obtain the product of these expressions, we simply expand the brackets as follows;

2x(5x -y +3) + y(5x -y +3)

= 10x^2 - 2xy + 6x + 5xy - y^2 + 3y

= 10x^2- 2xy + 5xy + 6x - y^2 + 3y

= 10x^2+ 3xy + 6x - y^2 + 3y

The product of 2x + y and 5x – y + 3 is thus 10x^2+ 3xy + 6x - y^2 + 3y

nikklg [1K]3 years ago
5 0

Answer: 10x^2 +3xy +  6x + -1y^2 + 3y

Step-by-step explanation:

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answer is (-7,2)

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We replace -x-5 for  y in the second equation

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Subtract x on both sides

-2x -5 = 9

Now add 5 on both sides

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Now plug in -7 for x in the first equation

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Step-by-step explanation:

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In the first week she will deposit $15, so she will have $100 + $15 = $115.

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Step-by-step explanation:

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