3x²-27 per x² + 2x - 3

3x2-27 perx2 = 3 -27 3-27+2×-3 =( 3-27-3)(2×)=33-2×

[tex] \frac{3x^{2} - 27}{x^2 + 2x - 3} \\ \frac{3(x^{2} - 9)}{(x - 1)(x + 3)} \\ \frac{3(x + 3)(x - 3)}{(x - 1)(x + 3)} \\ \frac{3(x - 3)}{(x - 1)} \\ \frac{3x - 9}{x - 1} [/tex]