1) ab(3a-b-a+2b) = ab(2a+b)2)mn(1-7n-1-7n) = -14mn^23) xy(10y-10+y) = xy(11y-10)<span>4)xz(5z-4x+1-5z) = xz(1-4x)</span>
Xy+3x-2y-6>xy
3x-2y-6>0
3x-2y>6
x>2+2/3 y
1)-(-3⁴)=81
2)-9²-16=-81-16=-97
3)16-0.5*(-2³)=15.5*(-8)=124
4)-0.1³-(-0.1²)=-0.001+0.01=0.009