Identify common factor: Identify if the quadratic can be factored using common factoring techniques.We are looking to factor the quadratic expression 5x2−20x+20. We can check if there is a common factor for all terms first.The common factor for all terms is 5.
Factor out common factor: Factor out the greatest common factor from the quadratic expression.5x2−20x+20=5(x2−4x+4)
Check for further factoring: Check if the quadratic expression inside the parentheses can be factored further.The quadratic x2−4x+4 is a perfect square trinomial because it can be written as (x−2)2.
Factor perfect square trinomial: Factor the perfect square trinomial. x2−4x+4=(x−2)(x−2) or (x−2)2
Write final factored form: Write the final factored form of the original quadratic expression. 5x2−20x+20=5(x−2)2
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