Bantuin yaaa.......dengan caranya

Bantuin yaaa…….dengan caranya

Penjelasan dengan langkah-langkah:

$sf1.) {x}^{5} - 9 {x}^{3} - 8 {x}^{2} + 72 \ sf {x}^{3} ( {x}^{2} - 9) - 8( {x}^{2} - 9) \ sf( {x}^{2} - 9)( {x}^{3} - 8) \ sf(x + 3)(x - 3)(x - 2)( {x}^{2} + 2x + 4)$

$sf2.) {x}^{4} + 4 {x}^{3} - 9 {x}^{2} - 16x + 20 \ sf {x}^{4} - {x}^{3} + 5 {x}^{3} - 5 {x}^{2} - 4 {x}^{2} + 4x - 20 + 20 \ sf (x - 1)( {x}^{3} + 5 {x}^{2} - 4x - 20) \ sf (x - 1)(x + 5)( {x}^{2} - 4) \sf (x - 1)(x + 5)(x - 2)(x + 2)$