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Misalnya ada dua bilangan ganjil berurutan yang bila dijumlah hasilnya 20. Jika bilangan itu x dan x+2 , berarti x+(x+2)= 20
Contoh soal :
1. Suatu bilangan jika dikalikan 5 lalu dikurangi 3, hasilnya adalah 12.
Penyelesaian :
Misalkan bilangan tersebut adalah x, maka :
5x - 3 = 12
Konstanta adalah suku dari bentuk aljabar yang berupa bilangan dan tidak memuat variabel. Jika dalam bentuk x^2 + 2x + 1 , yang termasuk konstanta adalah 1.
Contoh soal :
2x^2 + 3xy + 7x - y - 8
Penyelesaian :
Konstanta adalah suku yang tidak memuat variabel, maka jawabannya adalah -8.
Koefisien adalah faktor konstanta dari suatu suku pada bentuk aljabar.
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