Images 3.2 M

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3.2 m. 3m^2-6m. (3m+5n)-{9m-[6m+2n-(12n-10m)]-m-(7m -4n)}. (M-6)^2-3m(m-4). M^2+6m+9.
3m^2-6m. (3m+5n)-{9m-[6m+2n-(12n-10m)]-m-(7m -4n)}. (M-6)^2-3m(m-4). M^2+6m+9.