Question

1) ( 0,6 + 2х) (7х - 2,8) =0

Answer 1

Произведение равно нулю, когда один из множителей равен нулю
0,6+2х=0 или 7х-2,8=0
2х=-0,6          7х=2,8
х=-0,3            х=0,4
ответ: х=-0,3, х=0,4

Буду признательна, если выберешь мой ответ лучшим ;)

Answer 2

( 0,6 + 2х) (7х - 2,8) =0
произведение равно 0, если один из множителей равен 0.
0,6+2х=0  или 7х-2,8=0
2х=-0,6              7х=2,8
х=-0,3                 х=0,4
ответ:  -0,3;  0,4

Answer 3

To solve the equation (0.6 + 2x)(7x - 2.8) = 0, you can use the zero-product property. The zero-product property states that if the product of two factors equals zero, then at least one of the factors must be zero. So, you can set each factor equal to zero and solve for x separately.

1. Set the first factor (0.6 + 2x) equal to zero: 0.6 + 2x = 0

Subtract 0.6 from both sides:

2x = -0.6

Now, divide both sides by 2:

x = -0.6 / 2 x = -0.3

2. Set the second factor (7x - 2.8) equal to zero: 7x - 2.8 = 0

Add 2.8 to both sides:

7x = 2.8

Now, divide both sides by 7:

x = 2.8 / 7 x = 0.4

So, there are two solutions for x: x = -0.3 x = 0.4