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  • https://math.libretexts.org/Courses/Long_Beach_City_College/Intermediate_Algebra/07%3A_Factoring/7.4%3A_Factor_Special_Products
    \(\begin{array}{lc} & 9 x^{2}+50 x+25 \\ \text { Are the first and last terms perfect squares? } & (3 x)^{2} \qquad\quad (5)^2 \\ \text { Check the middle term-is it 2ab? } & (3 x)^{2} \searrow_{2(3 x...\(\begin{array}{lc} & 9 x^{2}+50 x+25 \\ \text { Are the first and last terms perfect squares? } & (3 x)^{2} \qquad\quad (5)^2 \\ \text { Check the middle term-is it 2ab? } & (3 x)^{2} \searrow_{2(3 x)(5) }\swarrow (5)^{2}. \\ & \tiny{30x} \\ \text { No! } 30 x \neq 50 x & \text { This does not fit the pattern! } \\ \text { Factor using the "ac" method. } & 9 x^{2}+50 x+25 \\ \begin{array}{c}{\text { ac }} \\ {\text { Notice: } 9 \cdot 25 \text { and } 5 \cdot 45=225} \\ {225}\end{array} \\ {\t…

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