What’s the answer?

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225