Question

Minta bantuan Gan Tolong ?

Answer 1

1. (x+2)(x+1)=0 => x=-1 atau -2
2. (x-3)(x+2)=0 => x=3 atau -2
3. (2x-1)(x+2)=0 => x=1/2 atau -2
4. (4x-1)(2x-5)=0 => x=1/4 atau 5/2
5. 2x^2=32 => x^2=16 => x=4
6. 2x(x+3)=0 => x=0 atau -3
7. 3x^2=21 => x^2=7 => x=akar 7
8. (3x+1)(x-5)=0 => x=-1/3 atau 5
9. (2x+1)(3x-5)=0 => x=-1/2 atau 5/3
10. (-2x+7)(3x+1)=0 => x=7/2 atau -1/3

Answer 2

1. x²+3x+2 = 0
   (x+2)(x+1) = 0
   x = 12 atau x = -1
2. x²-x-6 = 0
   (x-3)(x+2) = 0
   x = 3 atau x = -2
3. 2x²+3x-2 = 0
   (2x-1)(x+2) = 0
   x = 1/2 atau x = -2
4. 8y²-22y+5 = 0
   (4y-1)(2y-5) = 0
    y = 1/4 atau y = 5/2
5. 2x²-32 = 0
   2(x²-16) = 0
   (x+4)(x-4) = 0
   x = -4 atau x = 4
6. 2x²+6x = 0
   2x(x+3) = 0
    x = 0 atau x = -3
7. 3x²-21 = 0
    3(x²-7) = 0
    (x+√7)(x-√7) = 0
    x = -√7 atau x = √7
8. 3x²-14x-5 = 0
   (3x+1)(x-5) = 0
    x = -1/3 atau x = 5
9. -7x-10+6x² = 0
    6x²-7x-10 = 0
    (6x+5)(x-2) = 0
     x = -5/5 atau x = 2
10. -6x²+19x+7 = 0
     (-2x+7)(3x+1) = 0
       x = 7/2 atau x = -1/3

semoga membantu ya :)