Разложите на множители:
1) 25m^2 - (m+n)^2
2) (x+4y)^2 - 16x^2
3)3a^2c - 27c^3
1) 25m^2 - (m+n)^2
2) (x+4y)^2 - 16x^2
3)3a^2c - 27c^3
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Answers & Comments
2) ((x+4y)-4x)((x+4y)+4x)=(4y-3x)(5x+4y)
3) 3c(a^2-9c^2)=3c(a-3c)(a+3c)