Question
Simplify the expression
721l5−1
Evaluate
l5×721−1
Solution
721l5−1
Show Solution

Find the roots
l=72157214
Alternative Form
l≈0.268172
Evaluate
l5×721−1
To find the roots of the expression,set the expression equal to 0
l5×721−1=0
Use the commutative property to reorder the terms
721l5−1=0
Move the constant to the right-hand side and change its sign
721l5=0+1
Removing 0 doesn't change the value,so remove it from the expression
721l5=1
Divide both sides
721721l5=7211
Divide the numbers
l5=7211
Take the 5-th root on both sides of the equation
5l5=57211
Calculate
l=57211
Solution
More Steps

Evaluate
57211
To take a root of a fraction,take the root of the numerator and denominator separately
572151
Simplify the radical expression
57211
Multiply by the Conjugate
5721×5721457214
Multiply the numbers
More Steps

Evaluate
5721×57214
The product of roots with the same index is equal to the root of the product
5721×7214
Calculate the product
57215
Reduce the index of the radical and exponent with 5
721
72157214
l=72157214
Alternative Form
l≈0.268172
Show Solution
