kak tolong bantuin isi soal ini dong pleasee

1) 2x² + 15x + 7 =0
(2x+1)(x+7)
• 2x+1 = 0
2x = -1
x = -1/2
• x+7 = 0
x=-7


2) 2x² -3x -5 = 0
(x+1)(2x-5)
• x+1=0
x = -1
• 2x-5 = 0
2x = 5
x = 5/2

3) -2x²-x+1=0 (dikali -1 agar min yg didepan bisa hilang), jadinya :
2x²+x-1=0
(2x-1)(x+1)
• 2x-1 =0
2x = 1
x = 1/2
• x+1 =0
x=-1

4) -4x²+9+9x=0 (dikali -1 agar min yg didepan bisa hilang), jadinya :
4x²-9-9x=0
4x²-9x-9=0
(4x+3)(x-3)
•4x+3=0
4x = -3
x = -3/4
•x-3=0
x = 3

5) 3x²+4x-4 = 0
(3x-2)(x+2)
•3x-2=0
3x = 2
x = 2/3
• x+2 =0
x = -2

semoga membantuu :)