Question

Решите уравнение (-15x-3)(2x-1)=0

Answer 1

 (-15x-3)(2x-1)=0
-30Х²-6Х+15х+3=0
-30Х²+9Х+3=0 ((( делим  на -3
10Х²-3Х-1=0
Д=9-4*10*(-1)=49
√д=7
Х₁=(3+7)/20=1/2=0,5

Х₂=(3-7)/20=-1/5=-0,2


или так

 (-15x-3)(2x-1)=0
-15x-3=0                2x-1=0
-15х=3                    2х  =1
х=-3/15=-1/5          Х=1/2

Answer 2

To solve the equation (-15x - 3)(2x - 1) = 0, we need to find the values of x that make the equation true. When the product of two factors is equal to zero, at least one of the factors must be zero. So, we can set each factor equal to zero and solve for x:

1. -15x - 3 = 0 Add 3 to both sides: -15x = 3 Divide by -15: x = 3 / -15 x = -1/5

2. 2x - 1 = 0 Add 1 to both sides: 2x = 1 Divide by 2: x = 1/2

The solutions to the equation are x = -1/5 and x = 1/2.