Ответ:
Объяснение:
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1) x³+6x²+12x+8-(x³-6x²+12x-8)=12x²+4x
x³+6x²+12x+8-x³+6x²-12x+8=12x²+4x
12x²+16=12x²+4x
16=4x
4x=16
x=4
2) x³+9x²+27x+27-(x³-12x²+48x-64)=21x²+7
x³+9x²+27x+27-x³+12x²-48x+64=21x²+7
21x²-21x+91=21x²+7
-21x+91=7
-21x=7-91
-21x=-94
x=4
1)24а^2-64аb+9ab-24b^2-(24a^2-9ab+64ab-24b^2)=24а^2-64аb+9ab-24b^2-24a^2+9ab-64ab+24b^2=-128ab+18ab
2) cp+3c^2-(3c^2-3cp+cp-p^2)=cp+3c^2-3c^2+3cp-cp+p^2=3cp+p^2
4) 9/15a^9b^9
5) 8/7x^8y^6
6) -9a^12b^16