(3×+1/3²)² bsk hrs di bwa tlngin doong

Mapel : Matematika
Kelas : VII SMP
Bab : Aljabar

Pembahasan :
(3x + (1/3)²)²
= (3x + 1/9)²
= (3x + 1/9)(3x + 1/9)
= (3x)² + 2(3x)(1/9) + (1/9)²
= 9x² + 2/3 x + 1/81

(3x+ 3^-2)²
1. 2. 2
maka
(3x)² + 2(3x)(3^-2) + (3^-2)²
9x² + 2/3x + 3^-4
= 9x² +2/3x + 1/81