Jika (12x-7) (2x+8)= ax2 +bx ×c,maka nilai a+b+c =......
Matematika
melanii05
Pertanyaan
Jika (12x-7) (2x+8)= ax2 +bx ×c,maka nilai a+b+c =......
2 Jawaban
-
1. Jawaban Anonyme
(12x - 7)(2x + 8) = ax² + bx + c
24x² + 82x - 56 = ax² + bx + c
Lihat kesemaan tempat
24 x² = a x²
a = 24
b = 82
c = -56
a + b + c = 50 ✔ -
2. Jawaban ayuirene
24x²+96x-14x-56 = 24x²+ 82x -56 = 0
a = 24
b = 82
c = -56
a+b+c = 24+82-56 = 50