Recognize the structure: Recognize the structure of the expression.The given expression is a quadratic in the form of ax2+bx+c. We need to factor it completely.
Look for common factors: Look for common factors in all terms.All terms in the expression 7+14x+7x2 have a common factor of 7.Factor out the common factor of 7.7(1+2x+x2)
Factor out the common factor: Recognize the structure of the expression inside the parentheses.The expression inside the parentheses is a perfect square trinomial because it can be written in the form (a+b)2 where a2=x2, 2ab=2x, and b2=1.
Recognize the structure inside: Factor the perfect square trinomial.The expression 1+2x+x2 can be factored as (x+1)2.So, the factored form of the expression inside the parentheses is (x+1)(x+1).
Factor the perfect square trinomial: Write the final factored form of the original expression.The final factored form of the expression 7+14x+7x2 is 7(x+1)2.
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