Kurangkanlah (aljabar) 3xpangkat2+8x-15dari5xpangkat2-x-10

[tex] 5 {x}^{2} - x - 10 - (3 {x}^{2} + 8x - 15) \\ = 5 {x}^{2} - x - 10 - 3 {x}^{2} - 8x + 15 \\ = 2 {x}^{2} - 9x + 5[/tex]

[tex] {3x }^{2} + 8x - 15 - 5x {}^{2} - x - 10 \\ = 3x {}^{2} - 5x {}^{2} + 8x -x - 15 - 10 \\ = - 2x + 7x - 5 [/tex]