Question

(18y+28)(1,8-0,9y)=0

Answer 1

(18y+28)(1,8-0,9y)=0

Это произведение равно 0 в том случае, если один из сомножителей равен 0.

В нашем случае это либо
18у + 28 = 0
18у = -28
у = -28 : 18
у = -14/9
у = -1 5/9

либо
1,8 - 0,9у = 0
-0,9у = -1,8
у = -1,8 : (-0,9)
у = 2

Таким образом получили два корня уравнения.

Ответ: у1 = -1 5/9; у2 = 2.

Answer 2

To solve the equation:

(18y + 28)(1.8 - 0.9y) = 0

We can use the zero-product property, which states that if a product of factors is equal to zero, then at least one of the factors must be zero.

Setting each factor to zero, we have:

18y + 28 = 0 or 1.8 - 0.9y = 0

Solving the first equation:

18y + 28 = 0 18y = -28 y = -28/18 y ≈ -1.556

Solving the second equation:

1.8 - 0.9y = 0 -0.9y = -1.8 y = -1.8/-0.9 y = 2

Therefore, the solutions to the equation (18y + 28)(1.8 - 0.9y) = 0 are y ≈ -1.556 and y = 2.