Question
Simplify the expression
8b3−5
Evaluate
1×b3×8−5
Solution
More Steps

Evaluate
1×b3×8
Rewrite the expression
b3×8
Use the commutative property to reorder the terms
8b3
8b3−5
Show Solution

Find the roots
b=235
Alternative Form
b≈0.854988
Evaluate
1×b3×8−5
To find the roots of the expression,set the expression equal to 0
1×b3×8−5=0
Multiply the terms
More Steps

Multiply the terms
1×b3×8
Rewrite the expression
b3×8
Use the commutative property to reorder the terms
8b3
8b3−5=0
Move the constant to the right-hand side and change its sign
8b3=0+5
Removing 0 doesn't change the value,so remove it from the expression
8b3=5
Divide both sides
88b3=85
Divide the numbers
b3=85
Take the 3-th root on both sides of the equation
3b3=385
Calculate
b=385
Solution
More Steps

Evaluate
385
To take a root of a fraction,take the root of the numerator and denominator separately
3835
Simplify the radical expression
More Steps

Evaluate
38
Write the number in exponential form with the base of 2
323
Reduce the index of the radical and exponent with 3
2
235
b=235
Alternative Form
b≈0.854988
Show Solution
