Use the difference of squares identity to write this polynomial in factored form 9x²-49

asked Nov 19, 2020 192k views

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$\bf 9x^2-49\implies 3^2x^2-7^2\implies \stackrel{\stackrel{\textit{difference of}}{\textit{squares}}}{(3x)^2-7^2}\implies (3x-7)(3x+7)$

Slashmili answered Nov 24, 2020

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