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Q: Is y2 plus 5y plus 25 a perfect square trinomial?

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Yes because its discriminant is equal to zero

No.

12

No, consider 16 + 25 ...

yes.it is.

3,136 k2 + 2,800 k + 625

2x2 + 15x + 25 = (2x + 5)(x + 5)

Yes, 6x2 - 4x + 25 is a trinomial. This is because there are three terms (thus the name trinomial), which are "connected" by operations of addition and subtraction: 6x2, 4x, and 25.If you mean to ask how to factor this particular trinomial, please specify so in your question.

(4x + 5)(4x + 5)

There is not a number that is a perfect square and perfect cube between 1 and 25.There is not a number that is a perfect square and perfect cube between 1 and 25.There is not a number that is a perfect square and perfect cube between 1 and 25.There is not a number that is a perfect square and perfect cube between 1 and 25.

27

c = 25 4x2 + 20x + 25 (2x + 5)(2x + 5)