Check Pattern: Determine if the quadratic expression is a perfect square trinomial.A perfect square trinomial is in the form (a+b)2=a2+2ab+b2. We need to check if 16s2+40s+25 fits this pattern.16s2 is a perfect square, as (4s)2=16s2.25 is a perfect square, as 52=25.The middle term, 40s, should be twice the product of the square roots of the first and last terms if the expression is a perfect square trinomial.2×4s×5=40s, which matches the middle term.So, the expression is a perfect square trinomial.
Write as Binomial: Write the expression as a square of a binomial.Since we have identified that 16s2+40s+25 is a perfect square trinomial, it can be written as the square of a binomial.The square root of 16s2 is 4s, and the square root of 25 is 5.The expression can be written as (4s+5)2.
Verify Factored Form: Check the factored form for any possible errors.To verify, we can expand (4s+5)2 to ensure it gives us the original expression.(4s+5)(4s+5)=16s2+20s+20s+25=16s2+40s+25.The expanded form matches the original expression, confirming that the factoring is correct.
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