Question

solve the inequality algebraically: x^2-9<0 solve the inequality algebraically: x^2-9<0 @Mathematics

Answer 1

x^2-9 < 0 add 9 to both sides
x^2 < 9 sqrt both sides
\[x<\sqrt{9}\]
when evaluating this it can be + or - 3 so we rewrite it like this:
-3<x<3

Answer 2

get x on one side.

so you have
\[x^2 < 9\]

take the square root of both sides.

\[-3 < x < 3 \]