<span>(x-y)+7х(x-y) = (x-y)(1+7x)</span>
-0.027^(-1/3) + (1/6)⁻¹ -3⁻¹ +5.5⁰=
= - (0.3³)^(-1/3) + 6 - (1/3) +1 =
= - 0.3⁻¹ + 7 - 1/3 =
= -10/3 - 1/3 +7 =
= -11/3 + 21/3 =
= 10/3 = 3 ¹/₃
1) [(3(n+1)-1)/(5(n+1)+2)]/(3n-1)/(5n+2)=
=(3n+2)(5n+2)/(3n-1)(5n+7)
15n^2+16n+4-15n^2-16n+7=11>0
2) [(n+2)/2n+3)]/(n+1)/(2n+1)=
(n+2)*(2n+1)/[(2n+3)*(n+1)]
2n^2+5n+2-2n^2-3-5n=-1<0
3)
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