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Factor. $\newline$ $9s^2 - 12s + 4$

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Factor quadratics: special cases

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Q. Factor.

\newline

9s^2 - 12s + 4

Identify Perfect Square Trinomial: Identify if the quadratic is a perfect square trinomial. $9s^2 = (3s)^2$ , $4 = 2^2$ , and the middle term is $2*(3s)*2 = 12s$ .
Write as Binomial Square: Write the expression as a square of a binomial. $\newline$ (\(3s)^ $2$ - $2$ \times( $3$ s)\times $2$ + $2$ ^ $2$ = ( $3$ s - $2$ )^ $2$ \.
Factor as Binomial Square: Factor the expression as the square of a binomial. $\newline$ $9s^2 - 12s + 4 = (3s - 2)(3s - 2)$ .

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