14. Which expression is equivalent to 2x2 - 6xy + 4xy - y2?

Mathematics

1 answer:

sergey [27]3 years ago

4 0

Answer: " [C]: " 2x² − 2xy − y² " .

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Step-by-step explanation:

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Given the expression:

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" 2x² − 6xy + 4xy − y² " ;

We can combine the "like terms" :

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- 6xy + 4xy = - 2xy ;

and rewrite the expression:

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" 2x² − 2xy − y² " ; which corresponds to:

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Answer choice: [C]: " 2x² − 2xy − y² " .

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Hope this is helpful to you!

Best wishes in your academic pursuits—

and within the "Brainly" community!

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sewing a border of ribbon onto her rectangular picnic blanket. The long side of the blanket is 70cm and the short side is 40cm.

Strike441 [17]

Answer:

$220$ cm

Step-by-step explanation:

We need to find the perimeter of the rectangular blanket in this case because a border is being sewn onto the blanket. The perimeter of a rectangle can be calculated by multiplying the sum of the rectangle's length and width by 2. As an algebraic expression, that would be $2(l+w)$ , where $l$ is the rectangle's length and $w$ is the rectangle's width. We are given that $l=70$ and $w=40$ . Therefore, $2(70+40)=2*110=220$ cm of ribbon will be needed. Hope this helps!