Apa hasil dari (3b+2)pangkat 2- (b-3)pangkat 2=

[tex] {(3b + 2)}^{2} - {(b - 3)}^{2} \\ = (9{b}^{2} + 12b + 4) - ( {b}^{2} - 6b + 9) \\ = 9 {b}^{2} - {b}^{2} + 12b + 6b + 4 - 9 \\ = 8 {b}^{2} + 18b - 5[/tex]