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jarptica [38.1K]
3 years ago
11

2x+4 and x+2 equivalent or not

Mathematics
1 answer:
nasty-shy [4]3 years ago
7 0
2x + 4 = 2(x + 2) are equivalent.
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What is the product of the polynomials below?<br> (3x^2 - 2x - 3)(5x^2 + 4x + 5)
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Answer:

15x^4+2x^3-8x^2-22x-15

Step-by-step explanation:

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koban [17]

The completely factored expression of 2x^2 + 4x + 3xy + 6y is (2x + 3y)(x + 2)

<h3>How to factor the polynomial?</h3>

The expression is given as:

2x^2 + 4x + 3xy + 6y

Group the expression into two

[2x^2 + 4x] + [3xy + 6y]

Factor out each group

2x(x + 2) + 3y(x + 2)

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(2x + 3y)(x + 2)

Hence, the completely factored expression of 2x^2 + 4x + 3xy + 6y is (2x + 3y)(x + 2)

Read more about factored expression at:

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7 0
2 years ago
If ab = 9 and a² + b² = 81, then (a+b)² = ?​
Andre45 [30]

Answer:

99

Step-by-step explanation:

Through some clever algebra, we can combine our first two equations using the fact that

(a+b)^2=a^2+2ab+b^2

We have the a² and the b² in the equation a^2+b^2=81, and we <em>almost </em>have a 2ab in the equation ab=9. To get that 2ab, we can simply double both sides of the first equation to get 2ab=18. From there, we'll add the first two equations together, giving us the summed equation

a^2+b^2+2ab=81+18\\a^2+2ab+b^2=99

And since (a+b)^2=a^2+2ab+b^2, we can equivalently say that

(a+b)^2=99

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3 years ago
When simplified, (2x + 3)(7x – 1) + (2x – 4) is:
Ray Of Light [21]

Answer:   B


Step-by-step explanation:


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3 years ago
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