|x+5| ≤ |x-1| selesaikan!
Matematika
winnr7
Pertanyaan
|x+5| ≤ |x-1| selesaikan!
1 Jawaban
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1. Jawaban erlyciatripurwanti
(x+5)²≤(x-1)²
(x+5)(x+5)≤(x-1)(x-1)
x²+10x+25≤x²-2x+1
x²-x²+10x+2x+25-1≤0
12x+24≤0
12x≤-24
x≥12