Tolong bantu jawab yg nomor 5,7,dan 9 kak:)

Tolong bantu jawab yg nomor 5,7,dan 9 kak:)

$5.8x {}^{2} + (4 - 3)x + ( - 3)(3) \ 8x {}^{2} - 9 \ \ 7.6x {}^{2} + (3 - 3)x + ( - 4)(4) \ 6x {}^{2} - 16 \ \ 9.12x {}^{2} + (6 - 6)x + ( - 2)(2) \ 12x { }^{2} \ 12x {}^{2} \ \ \ \ \ semoga : membantu \ by putri1804$

jadikan jawaban terbaik ya.