Linear Algebra Examples

$x^{2} + (2 a + 1) x^{2} + (a^{2} + 2 a - 1) x + (a^{2} - 1)$

Step 1

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Interval Notation:

$(- \infty, \infty)$

Set-Builder Notation:

${x | x \in ℝ}$