3*10+1*10+5*10=30+10+50=90
4(x+1)-6(2-x)>2,
4x + 4 - 12 + 6x > 2,
10x - 8 > 2,
10x > 2 + 8,
10x > 10,
x > 10:10,
x > 1.
Ответ: x>1.
25-4x=525; -4x=525-25; -4x=500; x=500/(-4)= -125. Ответ: x= -125.
Решение
) (ax)² = a²x²
<span>2) (xyz)^12 = (x^12)*(y^12)*(z^12)</span>
<span>3) (7m)^8 = (7^8)*(m^8)</span>
<span>4) (-0,3bc)^11 = [(-0,3)^11] * (b^11)*(c^11)</span>
=1/c^3*c^5/3=c(-3)*c^5/3=c(-3+5)/3=c^2/3