Question

if f(x)=x^2+4x, find the values of x if the value of f(x) is 5.

Answer 1

hmmm. i tried that but the answer is (1,-5).

Answer 2

If F9X) = 5, then x^2 + 4x = 5
So, x^2 + 4x - 5 = 0
(x+5)(x-1) = 0

Therefore, x = -5, 1

Answer 3

easyaspi314 is correct, I had read it wrong the first time

Answer 4

How did you get F9x in the beginning?

Answer 5

typo they meant f(x)