Algebra Examples

$x^{2} + 4 \geq 0$

Step 1

Subtract $4$ from both sides of the inequality.

$x^{2} \geq - 4$

Step 2

Since the left side has an even power, it is always positive for all real numbers.

All real numbers

Step 3

The result can be shown in multiple forms.

All real numbers

Interval Notation:

$(- \infty, \infty)$