Verified Answer :

metchelle

The number to be added in an expression x2 + 4x + 3 in order to make it as a perfect trinomial is 1, we need to add 1 to 3 to make it 4 since 4 is a perfect square. Thus, the equation is then x2 + 4x + 4 and the factor of it would bew (x+2)(x+2).

Answer:

We need to add 1.

Step-by-step explanation:

The given expression is :

\(x^{2} +4x+3\)

We have to add 1 to the expression.

\(x^{2} +4x+3+1\)

This makes it : \(x^{2} +4x+4\)

And its factor will be \((x+2)(x+2)\)

or we can write as : \((x+2)^{2}\)

Therefore, we should add 1 unit tiles to the given expression in order to form a perfect square trinomial.

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