Question

16-20x2+1,5*5x2=5*x2

Answer 1

-20х*2+1,5*5х2-5*2х=16
-40х+15х-10х=16
-35х=16
х=-0,457

Answer 2

Let's solve the equation step by step:

1. Start with the given equation: 16 - 20x^2 + 1.5 * 5x^2 = 5 * x^2

2. Combine like terms: -20x^2 + 7.5x^2 = 5x^2

3. Simplify: -12.5x^2 = 5x^2

4. Move all the x^2 terms to one side of the equation: -12.5x^2 - 5x^2 = 0

5. Combine like terms again: -17.5x^2 = 0

6. Finally, solve for x^2: x^2 = 0

7. To find the value of x, take the square root of both sides: x = ±√0

Since the square root of 0 is 0, we have two solutions for x: x = 0 x = 0

So, the equation is true for any value of x equal to 0.