Identify Perfect Square Trinomial: Determine if the quadratic can be factored using the perfect square trinomial formula.A perfect square trinomial is in the form (a+b)2=a2+2ab+b2. We need to check if y2+4y+4 fits this pattern.y2 is a perfect square, as y2=(y)2.4y is twice the product of y and some number b.4 is a perfect square, as 4=22.We can see that 4y is twice the product of y and y2+4y+41, which means y2+4y+42.So, y2+4y+4 fits the pattern of a perfect square trinomial with y2+4y+44 and y2+4y+45.
Apply Perfect Square Trinomial Formula: Factor the expression using the perfect square trinomial formula.Since we have identified that y2+4y+4 is a perfect square trinomial, we can write it as (y+2)2.This is because (y+2)(y+2)=y2+2⋅y⋅2+22=y2+4y+4.
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