Pra-Aljabar Contoh

$\frac{2 x^{2} + 5 - 7}{x^{2} - 11 x + 18} \cdot \frac{x^{2} - 4 x - 45}{2 x^{2} + 15 x + 28} = \frac{(x - 11) (x + 5)}{(x - 2) (x + 4)}$

Langkah 1

Gambarkan masing-masing sisi persamaannya.

$y = \frac{2 x^{2} + 5 - 7}{x^{2} - 11 x + 18} \cdot \frac{x^{2} - 4 x - 45}{2 x^{2} + 15 x + 28}$

$y = \frac{(x - 11) (x + 5)}{(x - 2) (x + 4)}$

Langkah 2