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Factor.\newline25n240n+1625n^2 - 40n + 16

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Q. Factor.\newline25n240n+1625n^2 - 40n + 16
  1. Determine Factoring Possibility: Determine if the quadratic can be factored using the form (anb)2=a2n22abn+b2(an - b)^2 = a^2n^2 - 2abn + b^2. We notice that 25n225n^2 is a perfect square, as is 1616. The middle term is 40n-40n, which could be the result of 22 times the product of the square roots of 25n225n^2 and 1616. Let's check if this is a perfect square trinomial: (5n)2=25n2(5n)^2 = 25n^2 (which matches the first term), (4)2=16(4)^2 = 16 (which matches the third term), 2×5n×4=40n2 \times 5n \times 4 = 40n (which matches the middle term, but we need to consider the sign). Since the middle term is negative, we are looking for 25n225n^200.
  2. Write as Square of Binomial: Write the quadratic as a square of a binomial.\newlineThe quadratic 25n240n+1625n^2 - 40n + 16 can be written as (5n4)2(5n - 4)^2 because it matches the form a2n22abn+b2a^2n^2 - 2abn + b^2 with a=5na = 5n and b=4b = 4.
  3. Check Factored Form: Check the factored form by expanding (5n4)2(5n - 4)^2 to ensure it equals the original quadratic.(\(5n - 44)^22 = (55n - 44)(55n - 44) = 2525n^22 - 2020n - 2020n + 1616 = 2525n^22 - 4040n + 1616\. This matches the original quadratic, confirming that the factored form is correct.