x²+4x+4=0
(x+2)(x+2)=0
x= -2
f(g(x))=0
f(6x+4)=0
f(0)=0
x=-4/6
i did it in to step because i didnt understand what you mean we you write (f+g)(x)
but probably the first answer is the correct one
Answer:
x = - 2
Step-by-step explanation:
(f + g)(x)
= f(x) + g(x)
= x² - 2x + 6x + 4
= x² + 4x + 4
Then
x² + 4x + 4 = 0 ← in standard form
(x + 2)² = 0 ← in factored form
x + 2 = 0
x = - 2
