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Mathematics 20 Online
OpenStudy (anonymous):

Factor: r2-49

OpenStudy (anonymous):

difference of perfect squares.

OpenStudy (anonymous):

= r^2 - 7^2 now can u find the factors???

jhonyy9 (jhonyy9):

so do you know the formula for differents of perfect squares ? (a^2 -b^2 )= ???

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