Ответ:
Объяснение:
а) =(5x+y)^2-2(5x+y)=(5x+y)(5x+y-2)
б) =(a^3+(2b)^3)(a^2-2ab+4b^2)=(a+2b)(a^2-2ab+4b^2)+(a^2-2ab+4b^2)=(a^2-2ab+4b^2)(a+2b+1)
в) =x^2+8x+16-16-(y^2+6y+9-9)+7=(x+4)^2-16-(y+3)^2+9+7=(x+4)^2-(y+3)^2=(x+4+y+3)(x+4-y-3)=(x+y+7)(x-y+1)
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Answers & Comments
Ответ:
Объяснение:
а) =(5x+y)^2-2(5x+y)=(5x+y)(5x+y-2)
б) =(a^3+(2b)^3)(a^2-2ab+4b^2)=(a+2b)(a^2-2ab+4b^2)+(a^2-2ab+4b^2)=(a^2-2ab+4b^2)(a+2b+1)
в) =x^2+8x+16-16-(y^2+6y+9-9)+7=(x+4)^2-16-(y+3)^2+9+7=(x+4)^2-(y+3)^2=(x+4+y+3)(x+4-y-3)=(x+y+7)(x-y+1)