Operator: An operator is a symbol that tells the compiler to perform certain mathematical or logical manipulations. PHP language supports following type of operators. Arithmetic Operators Comparison Operators Logical (or Relational) Operators Assignment Operators Conditional (or ternary) Operators Arithmetic Operators + – * / ++ — % Comparison Operators == != > < >=

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## Math Equation: A + B Whole Square

(a + b)2 = (a + b) (a + b) = a2 + ab + ab + b2 = a2 + 2ab + b2

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