Question

-4x-3=0; 8x+240=0; (2x-10) •(-5x+18) =0

Answer 1

Уравнение 1

-4x - 3 = 0

-4х = 3

х = -0,75

Уравнение 2

8x + 240 = 0

8х = -240

х = -30

Уравнение 3

(2x-10)(-5x+18) = 0

2х - 10 = 0

2х = 10

х₁ = 5

-5х + 18 = 0

-5х = -18

х₂ = 3,6

Answer 2

To solve each of these equations, we need to find the values of 'x' that satisfy them. Let's go through each equation one by one:

1. -4x - 3 = 0:

To solve for 'x', we need to isolate it on one side of the equation. Let's do that:

Add 3 to both sides to move the constant term to the right side of the equation: -4x = 3

Now, divide both sides by -4 to get the value of 'x': x = 3 / -4 x = -3/4

So, the solution to the equation -4x - 3 = 0 is x = -3/4.

2. 8x + 240 = 0:

To solve for 'x', we again need to isolate it on one side of the equation:

Subtract 240 from both sides: 8x = -240

Now, divide both sides by 8: x = -240 / 8 x = -30

So, the solution to the equation 8x + 240 = 0 is x = -30.

3. (2x - 10) * (-5x + 18) = 0:

To find the solutions to this equation, we set each factor equal to zero:

1st factor: 2x - 10 = 0 Add 10 to both sides: 2x = 10 Now, divide both sides by 2: x = 10 / 2 x = 5

2nd factor: -5x + 18 = 0 Subtract 18 from both sides: -5x = -18 Divide both sides by -5: x = -18 / -5 x = 18/5

So, the solutions to the equation (2x - 10) * (-5x + 18) = 0 are x = 5 and x = 18/5.

To summarize:

• The solution to -4x - 3 = 0 is x = -3/4.
• The solution to 8x + 240 = 0 is x = -30.
• The solutions to (2x - 10) * (-5x + 18) = 0 are x = 5 and x = 18/5.