List the perfect squares between 100 and 500 that are even numbers

What kinds of numbers make up the set of numbers called the real numbers? give examples when you explain a number type. there are a limited set of types of numbers, but an unlimited number of examples of these numbers.

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?

X+y=-4 x-y=2 use elimination with adding and subtraction