Question

СРОЧНОООООООООООООООО РЕШИТЕ УРАВНЕНИЕ : 1) 4X^2 = 9 2) 3X^2 - 9 = 0 3) 5x^2 + 1 = 0

Answer 1

4x²=9
x²=9/4
x1=-3/2
x2=3/2

3x²-9=0
3x²=9
x2=3
x1=-√3
x2=√3

5x²+1=0
5x²=-1
x²=-1/5
нет решения

Answer 2

I can help you solve equations using the quadratic formula. Here are the solutions for each equation:

1) 4x^2 = 9

This equation can be written as 4x^2 - 9 = 0, which is a difference of squares. It can be factored as (2x + 3)(2x - 3) = 0. Then, by setting each factor equal to zero, we get x = -3/2 or x = 3/2.

2) 3x^2 - 9 = 0

This equation can be written as 3x^2 = 9, which can be divided by 3 on both sides to get x^2 = 3. Then, by taking the square root of both sides, we get x = ±√3.

3) 5x^2 + 1 = 0

This equation has no real solutions, because the left side is always positive and the right side is zero. However, if we allow complex solutions, we can use the quadratic formula to get x = (-b ± √(b^2 - 4ac))/(2a), where a = 5, b = 0, and c = 1. Plugging in these values, we get x = (-0 ± √(0 - 4(5)(1)))/(2(5)), which simplifies to x = ±i√(4/5).

I hope this helps you with your math homework. For more information on how to solve quadratic equations, you can check out these websites. Have a nice day!