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Effectus [21]
3 years ago
13

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

Mathematics
2 answers:
hoa [83]3 years ago
7 0

Answer:  The required product is 10x^2-y^2+3xy+6x+3y.

Step-by-step explanation:  We are to find the product f the following two algebraic expressions:

E_1=2x+y,\\\\E_2=5x-y+3.

To find the product of the above two expressions, we must multiply each term of the first expression with each term of the second expression.

The multiplication is as follows:

M\\\\=E_1 \times E_2\\\\=(2x+y)\times(5x-y+3)\\\\=10x^2-2xy+6x+5xy-y^2+3y\\\\=10x^2-y^2+3xy+6x+3y.

Thus, the required product is 10x^2-y^2+3xy+6x+3y.

enyata [817]3 years ago
4 0

Answer: 10x^2-y^2+3xy+6x+3y

Step-by-step explanation:

Given expressions are 2x+ y and 5x -y +3

Product of 2x+y and 5x-y+3 is

(2x+y)\times (5x-y+3) = 2x\times (5x-y+3) + y\times (5x-y+3) ( by applying distributive property under multiplication over addition)

⇒(2x+y)\times (5x-y+3) = 10x^2-2xy+6x+5xy-y^2+3y (again by distributive property)

⇒(2x+y)\times (5x-y+3) = 10x^2-y^2+3xy+6x+3y  ( by operating the like terms.)

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aleksandr82 [10.1K]

Answer:

653.91 squared or 326.955 not squared

Step-by-step explanation:

We have a hyponuse of 26 and one leg of 4.7 and we are trying to figure out the missing leg!

The first step is

A^2 + B^2 = C^2

2 step

4.7^2 + B^2 = 26^2

3 step

4.7 x 4.7 =  22.09  and 26 x 26 = 676

4 step

22.09 + B^2 = 676

5 step

676 - 22.09 = 653.91

6 step

Answer

653.91 squared or 326.955 not squared!

hope this helps

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3 years ago
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A particle moves along a straight line with equation of motion s = f(t), where s is measured in meters and t in seconds. Find th
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3 years ago
Enter the indicated element.
Ymorist [56]

a_{1,3} = 9

Step-by-step explanation:

The elements of matrices are represented in the form

a_{r,c}

Here r is the row number and c is the column number.

Given matrix is:

A = \left[\begin{array}{ccc}3&6&9\\2&4&8\end{array}\right]

The elements of matrix will be represented by a_{r,c}

We have to find a_{1,3}

Which means that the first row and third column.

The first row is: 3   6    9 and the element in third column is: 9

So,

a_{1,3} = 9

Keywords: Matrices, Elements

Learn more about matrices at:

  • brainly.com/question/10541435
  • brainly.com/question/10666510

#LearnwithBrainly

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3 years ago
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