KUIS MATEMATIKA Kode: Olim-03-6-4

Materi: Aljabar

Misal x = 123456789
shg terbentuk suatu ekspresi aljabar
x^2 - (x+1)(x-1) = x^2 - (x^2-1) = 1.

#selesai

123456789 = a

123456790 = 123456789 + 1 = a+1

123456788 = 123456789 - 1 = a-1

(123456789)^2 - (123456790)(123456788)
= a^2 - (a+1)(a-1)
= a^2 - (a^2-a+a-1)
= a^2 - (a^2 - 1)
= 1