1.
а) = -1а⁴
b) = -2b⁴c¹¹
2.
a) = 8a(6)b³
b) - 3a(12)b(8)
Б)2a²+3ab+2ab+3b²=2a²+5ab+3b<span>²
г)12z</span>²-6yz-2yz+y²=12z²-8yz+y<span>²
e) 16m</span>²+12nm+12nm+9n²=16m²+24nm+9n<span>²
з)100x</span>²-50xz+30zx-15z²=100x²-20xz-15z<span>²
</span>
(-1)^n+n+n+n=(-1)^4n=1^n=1