Объяснение:
2)(x+3)(x²-3x+9)=(x+3)³
4)(2x-y)(4x²+2xy+y²)=(2x-y)³
6)(1+c)(1-c+c²)=(1+c)³
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Объяснение:
2)(x+3)(x²-3x+9)=(x+3)³
4)(2x-y)(4x²+2xy+y²)=(2x-y)³
6)(1+c)(1-c+c²)=(1+c)³