Question

The domain of the function f(x)=
is
x²+2x+1÷x- 8x+12
A) R-1-1
B) R-{-2,-6}
C) R-{2,6
D) R-2,10​

Answer 1

CORRECT QUESTION ⚜️

$\frac{ {x}^{2} + 2x + 1 }{ {x}^{2} - 8x + 12}$

SOLUTION ⚜️

$given \: f(x) = \frac{ {x}^{2} + 2x + 1 }{ {x}^{2} - 8x + 12}$

Here, f(x) is an rational function of x as$\frac{ {x}^{2} + 2x + 1 }{ {x}^{2} - 8x + 12}$is rational expression.

$\therefore f(x) \: assumes \: real \: values \: x \: espects \\ for \: the \: values \: of \: x \: for \: which \: {x}^{2} - 8x + 12 = 0$

$i.e.,(x - 6)(x - 2) = 0 \rightarrow x = 6,2 \\ \therefore domain \: of \: f(x)$

= R-{2,6}

Hence, option c is correct R-{2,6}