Solve the Quadratic Equation: -2x² - 5x - 9 = 0

Question

Solve the following equation:

2x25x9=0 -2x^2-5x-9=0

Video Solution

Solution Steps

00:00 Find X
00:04 Identify the coefficients
00:17 Use the roots formula
00:34 Substitute appropriate values according to the given data and solve
00:56 Calculate the square and products
01:15 A root cannot be a negative number
01:29 Therefore there is no solution to the question

Step-by-Step Solution

To solve the quadratic equation 2x25x9=0 -2x^2 - 5x - 9 = 0 , we follow these steps:

  • Step 1: Identify coefficients a=2a = -2, b=5b = -5, c=9c = -9.
  • Step 2: Compute the discriminant, b24acb^2 - 4ac.
  • Step 3: Analyze the discriminant's value to determine the nature of the roots.

Step 1: We have a=2a = -2, b=5b = -5, c=9c = -9.

Step 2: Calculate the discriminant:
b24ac=(5)24(2)(9)=2572=47b^2 - 4ac = (-5)^2 - 4(-2)(-9) = 25 - 72 = -47.

Step 3: Since the discriminant value is 47-47, which is less than zero, this indicates that there are no real solutions because the square root of a negative number is imaginary.

Therefore, since there are no real solutions, we conclude that the problem has no real solutions.

Thus, the solution to the equation is No solution.

Answer

No solution