simplifyCore(): Core Symbolic Simplification

simplifyCore() applies core algebraic simplification rules to an expression. It can reduce redundant operations and normalize forms before evaluation or display.

Use symbolic tools deliberately

Compare it with simplify() and simplifyConstant(). Equivalent expressions can have different desired forms, so verify results with evaluate() using representative values.

Simplification is not a substitute for domain checks: cancelling factors can hide exclusions such as division by zero. Use parse() to inspect an expression before transforming it.