Find the domain of $$f ( x ) = \frac { 2 x ^ { 2 } - x - 25 } { x ^ { 2 } + 5 x + 5 }$$ .
A)all real numbers
B)all real numbers except x = -5
C)all real numbers except x = 25
D)all real numbers except x = -1
E)all real numbers except x = -5 and x = -2

Question

Quizplus · Accepted Answer

The denominator $x^2 + 5x + 5$ does not have any real roots, so it never equals zero. Therefore, the function is defined for all real numbers.

Find the Domain Of f(x)=2x2−x−25x2+5x+5f ( x ) = \frac { 2 x ^ { 2 } - x - 25 } { x ^ { 2 } + 5 x + 5 }f(x)=x2+5x+52x2−x−25​

Find the Domain Of $f ( x ) = \frac { 2 x ^ { 2 } - x - 25 } { x ^ { 2 } + 5 x + 5 }$