Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

Option d is correct 5, -4

Step-by-step explanation:

Given equation x² - 20 = x

rewriting the above equation

x² - x - 20 = 0

where a = 1; b = -1; c = -20

put values of a, b and c in the formula

x = 5

x = -4

The correct answer option is d. 5, -4.

Step-by-step explanation:

We are given the following equation and we are to solve it using the quadratic formula:

Re-arranging this equation in order of decreasing power:

Using the quadratic formula:

Substituting the given values in the formula to get: