An equation is a mathematical statement that two expressions are equal. Similarly, an inequality is a statement that two expressions are ordered; that is one is larger than the other. Recall that complex numbers cannot be ordered and are equal when both the real and imaginary parts are equal.
An equation is written as follows:
expression = expressionThe following statements are equations:
An inequality is written as:4x + 7y = 11 y = 5x2 – 3 x + 3 = 15y - z
expression > expressionThe following are inequalities:
y > x x < |y - 2| z3 > x + y
2.1. Terms
2.2. Factors
2.3. Evaluation of expressions
2.4. Solved problems