Solve for b 81b^2-1=0

Math
81b2-1=0
Add 1 to both sides of the equation.
81b2=1
Divide each term by 81 and simplify.
Tap for more steps…
Divide each term in 81b2=1 by 81.
81b281=181
Cancel the common factor of 81.
Tap for more steps…
Cancel the common factor.
81b281=181
Divide b2 by 1.
b2=181
b2=181
b2=181
Take the square root of both sides of the equation to eliminate the exponent on the left side.
b=±181
The complete solution is the result of both the positive and negative portions of the solution.
Tap for more steps…
Simplify the right side of the equation.
Tap for more steps…
Rewrite 181 as 181.
b=±181
Any root of 1 is 1.
b=±181
Simplify the denominator.
Tap for more steps…
Rewrite 81 as 92.
b=±192
Pull terms out from under the radical, assuming positive real numbers.
b=±19
b=±19
b=±19
The complete solution is the result of both the positive and negative portions of the solution.
Tap for more steps…
First, use the positive value of the ± to find the first solution.
b=19
Next, use the negative value of the ± to find the second solution.
b=-19
The complete solution is the result of both the positive and negative portions of the solution.
b=19,-19
b=19,-19
b=19,-19
The result can be shown in multiple forms.
Exact Form:
b=19,-19
Decimal Form:
b=0.1‾,-0.1‾
Solve for b 81b^2-1=0

Solving MATH problems

We can solve all math problems. Get help on the web or with our math app

Scroll to top