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x2+14x+49 = (x+7)(x+7) when factored

Q: Is this trinomial a trinomial square x2 plus 14x plus 49?

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Yes because if x2-14x+49 then it is (x-7)(x-7) when factored

-12

In a word, yes. Any simplified form that has 3 terms is a trinomial, but is often in the form ax2 +bx +c where a,b,c are real numbers.

2x2 + 21x + 49 = 2x2 +14x +7x + 49 = 2x(x + 7) + 7(x + 7) = (2x + 7)(x + 7)

Yes.

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Yes because if x2-14x+49 then it is (x-7)(x-7) when factored

-12

x2 - 14x + 49 = (x - 7)2

-x2+14x=49

In a word, yes. Any simplified form that has 3 terms is a trinomial, but is often in the form ax2 +bx +c where a,b,c are real numbers.

2x2 + 21x + 49 = 2x2 +14x +7x + 49 = 2x(x + 7) + 7(x + 7) = (2x + 7)(x + 7)

Yes.

(x2 + 14x + 49) = (x + 7)2

49 x2 + 14x = -7 x2 + 14x + 49 = 42 (x + 7)2 = 42 x = -7 ± √42

49

49

(x - 7) is.