Ответ:
Объяснение:
1) 2) (2 2/3-3x)(2x+1) ≥0
(8-7x)(2x-7) ≥0 2x+1=0 2 2/3-3x=0
8-7x=0 2x-7=0 2x=-1 8/3-3x=0
7x=8 2x=7 x=-1/2 3x=8/3 // : 3
X1=8/7 x2=7/2 x2=8/9
Rys.1 rys.2
X ∈ (-∞;8/7] U [7/2 ; +∞) x ∈ (-∞;-1/2] U [8/9;+∞)
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Answers & Comments
Ответ:
Объяснение:
1) 2) (2 2/3-3x)(2x+1) ≥0
(8-7x)(2x-7) ≥0 2x+1=0 2 2/3-3x=0
8-7x=0 2x-7=0 2x=-1 8/3-3x=0
7x=8 2x=7 x=-1/2 3x=8/3 // : 3
X1=8/7 x2=7/2 x2=8/9
Rys.1 rys.2
X ∈ (-∞;8/7] U [7/2 ; +∞) x ∈ (-∞;-1/2] U [8/9;+∞)