Question

(4,9+3,5x)(7x-2,8)=0

Answer 1

1). 4,9 + 3,5x = 0. X =. ( - 1,4. ). 2) 7X - 2,8. = 0. X = 0,4. ответ минус 1,4 и плюс 0,4

Answer 2

To solve the equation (4.9 + 3.5x)(7x - 2.8) = 0, you can use the zero-product property, which states that if the product of two factors equals zero, then at least one of the factors must be equal to zero. So, you can set each factor equal to zero and solve for x separately.

1. Set the first factor equal to zero: 4.9 + 3.5x = 0

Subtract 4.9 from both sides:

3.5x = -4.9

Now, divide both sides by 3.5 to isolate x:

x = -4.9 / 3.5 x = -1.4

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

Add 2.8 to both sides:

7x = 2.8

Now, divide both sides by 7 to isolate x:

x = 2.8 / 7 x = 0.4

So, the solutions to the equation (4.9 + 3.5x)(7x - 2.8) = 0 are x = -1.4 and x = 0.4.