Ответ:
1) 2ab+a-14b-7
2) 8a^2-14a+3
3) 8a^3-b^3
4) 7a^2-27a+27
5)
x^2-2x+3x-6-x^2-x+12=6x
0+6=6x
X=1
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Ответ:
1) 2ab+a-14b-7
2) 8a^2-14a+3
3) 8a^3-b^3
4) 7a^2-27a+27
5)
x^2-2x+3x-6-x^2-x+12=6x
0+6=6x
X=1