Mhon bantu plis tolong ya semuanya......

Liat di foto ya, aku ga jawab nomor 6 karena ga yakinnn
Semoga membantu ☺️

1. (x-5)(x+4) = 0
     x-5 = 0     x+4 = 0
         x = 5        x = -4

    Hp {-4,5}

2) x1+x2 = -3+5 = 2
    x1.x2 = (-3)(5) = -15

    x² - (2)x + (-15) = 0
    x²-2x-15 = 0

3) x = √10²-8² = √36 = 6 
    sin α = 8/10 = 4/5
    cos α = 6/10 = 3/5
    tg α = 8/6  = 4/3

4) sin 30 = 1/2 
    cos 60 = 1/2
    tg 45 = 1
    1/2 + 1/2 + 1 = 2

5) AC = 12√2
    PC = 6
    AP =√(12√2)²+6²
          = √288+36
          = √324
          = 18 cm 

6) BP = √6²+12²
          = √36+144
          = √180
          = 6√5 cm

7) L = [tex] \frac{(x-3)(x+3)}{x-3} =x+3 =3+3=6 [/tex]

8) L =[tex] \frac{(x-5)(x+4)}{2(x-5)} = \frac{x+4}{2} = \frac{5+4}{2}= \frac{9}{2}=4 \frac{1}{2} [/tex]

9) jmlah = 6+5 = 11 siswa

10) n(s) = 6² = 36 ruang sample