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August 2022 1 39 Report

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WRTLN 1)
a)9a^2-6a+1=(3a+1)^2
б)16x^2+8x+1=(4x+1)^2
в)36a^2+84ab+49b^2=(6a+7b)^2
г)25m^2-20mn+4n^2=(5m-2n)^2
д)9a^2-12a+4=(2-3a)^2
2)
а)25a^2+10a+1=(5a+1)^2
б)4x^2-12xy+9y^2=(2x-3y)^2
в)36m^2+12m+1=(6m+1)^2
г)9a^2-30a+25=(3a-5)^2
д)1-10x+25x^2=(1-5x)^2

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