Does an expression have an equal sign?

Answer 1

No, expressions do not have equal signs. Equations do, though. You can think of it like this: Equtions have EQUAl signs, while expressions do not.
No, an expression cannot have an equal sign. If it were to have an equal sign, it would then be an equation.

Answer 2

NO!!!!

An 'equation' has an equals(=) sign .

e.g.

Expression

x^(2) + 5x + 6

Equation

x^(2) + 5x + 6 = 0