4y-9≥3(y-2)
4у-3у≥-6+9
у≥3
Ответ: у≥3
6x+1≥2(x-1)-3x
6х+х≥-2-1
7х≥-3
х≥3/7
Ответ:3/7
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(m-2)/(m^2-m-2) - m/(m^2+2m+1)=((m-2)(m+2)^2 - m(m^2-m-2)) / (m^2-m-2)(m+2)^2 = ((m^2-4)(m+2) - m^3+m^2+2m) / (m^2-m-2)(m+2)^2 =
(m^3+2m^2-4m-8 - m^3+m^2+2m) / (m^2-m-2)(m+2)^2 = (3m^2-2m-8) / (m^2-m-2)(m+2)^2 = (m-2)(m+4/3) / (m+1)(m-2)(m+2)^2 =(m+4/3) / (m+1)(m+2)^2
V25=5
5*5=25
v25=5
Верно
v3,24=1,8
1,8*1,8=3,24
v3,24=1,8
Верно
v196=14
14*14=196
v196=14
Верно