Question

Решите неравенство:
1) 2x-1<=2(2x=3)
2) 5(a^-1)-5a(a+2)>3

Answer 1

1) 2x-1≤(2x-3)

2x-1≤4x-6

5≤2х

х≥2.5

2) 5(a²-1)-5a(a+2)>3

5a²-5-5а²-10а>3

0>10a+5+3

10a+3<0

a<-3/10