1 per ( x + 1 ) - 1 per ( x + 2 ) =
Matematika
natasia2
Pertanyaan
1 per ( x + 1 ) - 1 per ( x + 2 ) =
2 Jawaban
-
1. Jawaban Anonyme
Bab Aljabar
Matematika SMP Kelas VII
1/(x + 1) - 1/(x + 2)
= (x + 2 - x - 1)/((x + 1) (x + 2))
= 1/(x² + 2x + x + 2)
= 1/(x² + 3x + 2) -
2. Jawaban queenmahira
1/(x+1) - 1/(x+2) =
= (x+2)/(x+1)(x+2) - (x+1)/(x+1)(x+2)
= ( x+2) - (x +1)/(x+1)(x+2)
= x+2-x-1/x²+2x+x+2
= 1/x²+3x+2