5
The domain of f is x is R (if imaginary roots are permitted, and there is nothing in the question to suggest otherwise). The domain of g is R excluding x = 5 So the domain of f + g is R excluding x = 5 and the domain of f/g is R excluding x = 0
-3
x can have any value in the domain.
Y = x squared -4x plus 3 is an equation of a function. It is neither called a domain nor a range.
126 ._.
if x-42x-8=0 x=-5.12500
If you mean: -2(3x-3) = 7x-2 then the value of x works out as 8/13
-1/19=x
x2 - 42x + 441 = (x - 21)2
x3 + 13x2 + 42x = x(x + 6)(x + 7).
y-42x = 24 >> Add 42x to both sides << y=24+42x >> Subtract 24 from both sides << y-24=42x >> Divine both sides by 42 << x=(y-24)/42
5x - 42x + 5 = - 37 x +5
(x - 2)(7x + 15)
-3(x + 2)(x + 4)
42x+35x-35x=42x it's leave 85 so it's change into a negative 42x-85 is the answer
Without an equality sign the expession given is not an equation. But if you mean 8 = 42x then the value od x is 8/42