Question

Which of the following must be added to x^2 + 6x + 5 to make it a perfect square?
3
4
5
6​

Answer 1

Answer:

x2−6x+5

=x2−2.x.3+32−4

=(x−3)2−4.

So to make it perfect square i.e. (x−3)2, we are to add 4 to add.

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Answer 2

We've,

x

2

−6x+5

=x

2

−2.x.3+3

2

−4

=(x−3)

2

−4.

Step-by-step explanation:

this is your answer