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3 years ago

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

Mathematics

2 answers:

Goryan [66]3 years ago

5 0

Answer:

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

Step-by-step explanation:

We need to multiply the two terms

$(2x + y) ( 5x - y + 3)\\=2x (5x - y + 3) + y( 5x - y + 3)\\=10x^2 -2xy +6x +5xy -y^2 +3y\\checking\,\, for \,\, the \,\, like \,\, terms\,\, (\,\,having\,\, same\,\, variables\,\,)\\=10x^2 -2xy +5xy +6x -y^2+3y\\=10x^2 + 3xy +6x -y^2 +3y$

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

Leya [2.2K]3 years ago

4 0

Answer:

The correct answer is 10x² + 3xy + 6x - y² + 3y

Step-by-step explanation:

It is given an expression (2x + y)(5x - y + 3)

To find the product

(2x + y)(5x - y + 3) = 2x * 5x - 2x*y + 2x*3 + y*5x -y² + 3y

= 10x² - 2xy + 6x + 5xy - y² + 3y

= 10x² + 3xy + 6x - y² + 3y

Therefore the correct answer is

10x² + 3xy + 6x - y² + 3y

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Answer:

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The independent variable is the part of the equation that changes. In this case the only thing that changes is how long she works, the amount of money she charges and what she is doing does not change.

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2 years ago

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prohojiy [21]

Answer:

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Step-by-step explanation:

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3 years ago

PLS HELP ASAP Cassandra earns $12. 98 an hour working at Key Food. How much money will she earn this month, if she works 36. 7 h

lord [1]

Answer:

476.37

Step-by-step explanation:

$12.98/hr at KF (Key Food)
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1 year ago

In the right triangle above, a = 99 and c= 124. Find the value of b, rounded to the nearest tenth.

Murljashka [212]

Answer:

B= -40

Step-by-step explanation:

So a right triangle has to = 180

So we write the given, which 124+99

we are trying to get 180 so lets subtract that by the equation, 180-124+99

180-(124+99)

12+99=223

180-223

=-43

But in your case it has to be rounded to the nearest tenth

So the answer is -40

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2 years ago

3x^2(x^3-1)+2x^3(2x^2+2) Whats the simplified answer?

ahrayia [7]

Answer:

$\large\boxed{7x^5+4x^3-3x^2}$

Step-by-step explanation:

$3x^2(x^3-1)+2x^3(2x^2+2)\qquad\text{use the distributive property:}\ a(b+c)=ab+ac\\\\=(3x^2)(x^3)+(3x^2)(-1)+(2x^3)(2x^2)+(2x^3)(2)\qquad\text{use}\ a^na^m=a^{n+m}\\\\=3x^{2+3}-3x^2+4x^{3+2}+4x^3\\\\=3x^5-3x^2+4x^5+4x^3\qquad\text{combine like terms}\\\\=(3x^5+4x^5)-3x^2+4x^3\\\\=7x^5+4x^3-3x^2$

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3 years ago