Simplifying expressions with rational exponents
Answers are for parents and teachers.
1
Simplify (x^(1/2) + 1)² - x.
2x^(1/2) + 1
2
Simplify (a - 4)/(a^(1/2) - 2).
a^(1/2) + 2
3
Simplify (x^(4/3) - x^(1/3))/x^(1/3).
x - 1
4
Find the value of a^(1/2) - 3 for a = 49.
4
5
Simplify (a^(1/2) + b^(1/2))(a^(1/2) - b^(1/2)) and find its value for a = 25, b = 16.
9