A radical equation is an equation in which the unknown variable appears inside a radical (root) sign, such as a square root, cube root, etc.
Key points:
It involves expressions like �, �, etc.
The main goal in solving radical equations is to eliminate the radical by raising both sides of the equation to a power (usually squaring).
After removing the radical, you solve the resulting algebraic equation.
Example:
Solve �
Square both sides:
Important note:
Always check your solutions by substituting back into the original equation, because squaring can introduce extraneous solutions (false answers).
In summary, radical equations combine algebra with roots, and solving them requires careful manipulation and verification.
