Question

What is the discriminant of the quadratic equation 2x + 5x = 1?

0-18
0-16
022
24

Answer 1

The discriminant of the quadratic equation 2x + 5x2 = 1 is 24.

--

Use this formula

• b²-4ac

Plug in

You get 24

Answer 2

24

Explanation:

Discriminant

b² - 4ac (when ax² + bx + c = 0)

Assuming the given equation is: 2x + 5x² = 1

Rewrite the equation so that it equals zero:

⇒ 5x² + 2x - 1 = 0

Therefore, a = 5 b = 2 c = -1

Input these into the discriminant formula and solve:

⇒ 2² - 4(5)(-1) = 4 + 20

= 24

Therefore, the discriminant of the quadratice equation is 24.