Question

I can't find the right answer

Answer 1

A

You can take the square root of the inequality x^2<4, which will make it x< plus or minus 2 (x<2, x<-2)

You know it is this answer because, the sign cannot be greater than or equal to since the circles aren't filled, and if you solve the other inequality, the answer you get does not match.

Hope this helps!! :)

Answer 2

x^2 ≥ 4

Explanation:

`x^2\ge \:4\\\\\mathrm{For\:}u^n\:\ge \:\:a\\\mathrm{,\:if\:}n\:\mathrm{is\:even}\mathrm{\:then\:}u\:\le \:\:-\sqrt[n]{a}\:or\:u\:\ge \sqrt[n]{a}\\\\x\le \:-√(4)\quad \mathrm{or}\quad \:x\ge √(4)\\\\√(4)=2\\\\x\le \:-2\quad \mathrm{or}\quad \:x\ge \:2`