By: Marwan Mohamed
What is a Radical Expression ??
1) When a radical sign shows no index, it represents a square root.
2) When a number has more than one real root, the radical sign indicates only the principal or the positive root.
Undefined and Defined !!
Undefined: While Even indices with negative radicands has no real roots.
Operations with Radical Expressions
Like Radicals can be added or subtracted normally.
√5 + √5 = 2√5
3√5 - √5= 2√5
A product under a radical is equal to the product of the radicals.
√ab = √a * √b
A quotient under the radical is equal to the quotient of the radicals.
√A/B = √√A/√B