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astraxan [27]
3 years ago
6

Which of the following values completes the square or creates a perfect square trinomial for x^2-12x+___

Mathematics
2 answers:
Mama L [17]3 years ago
4 0

Answer:  The correct option is

(C) 36.

Step-by-step explanation:  We are given to select the value that completes the square or creates a perfect square trinomial for the following incomplete expression :

E=x^2-12x+?

We will be using the following square formula :

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

Let the required value be represented by c.

We have

E\\\\=x^2-12x+c\\\\=(x^2-2\times x\times 6+6^2)+c-6^2\\\\=(x-6)^2+c-36.

So, for the given expression to be a perfect square trinomial, we must have

c-36=0\\\\\Rightarrow c=36.

Thus, the required value is 36.

Option (C) is CORRECT.

9966 [12]3 years ago
3 0

Answer:

So, 36 completes perfect square

Step-by-step explanation:

we are given

trinomial as

x^2-12x+......

we can square formula

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

we can see that middle term is 2ab

so, we will factor middle term in 2ab form

12x=2\times x\times 6

We can see that b is 6

so, if we could add 6^2 , then we will get perfect square

x^2-12x+6^2......

x^2-12x+36......

So, we should add 36

so, 36......Answer

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