ПОМОГИТЕ 2 И 4 СРОЧНО РЕШИТЬ!!! ДАМ МНОГО БАЛЛОВ!!
2)(2n²+11n+14)/(n+3) - 2n + 1/(n+3)=(2n²+11n+15)/(n+3) -2n= =(2n²+11n+15-2n²-6n)/(n+3)=(5n+15)/(n+3)= =5(n+3)/(n+3)=5, n≠-3 4)3ˇ(10x+5)-1≥0 3ˇ(10x+5)≥1 3ˇ(10x+5)≥3ˇ0 10x+5≥0 10x≥-5 x≥-1/2 ==========