Question

Which are the solutions of x2= -13x -4

Answer 1

Answer: D

Explanation:

To solve this question, we need to change the equation to standard form.

`x^2=-13x-4` [add both sides by 13x and 4]

`x^2+13x+4=0` [use quadratic equation]

`(-13+√(13^2-4(4)))/(2) , (-13-√(13^2-4(4)))/(2)` [simplify]

`(-13+√(13^2-16))/(2) , (-13-√(13^2-16))/(2)`

`(-13+√(169-16))/(2) , (-13-√(169-16))/(2)`

`(-13+√(153))/(2) , (-13-√(153))/(2)`

Therefore, the answer is D.