Solve for z z*z=1.21

Math
z⋅z=1.21
Multiply z by z.
z2=1.21
Take the square root of both sides of the equation to eliminate the exponent on the left side.
z=±1.21
The complete solution is the result of both the positive and negative portions of the solution.
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Simplify the right side of the equation.
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Rewrite 1.21 as 1.12.
z=±1.12
Pull terms out from under the radical, assuming positive real numbers.
z=±1.1
z=±1.1
The complete solution is the result of both the positive and negative portions of the solution.
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First, use the positive value of the ± to find the first solution.
z=1.1
Next, use the negative value of the ± to find the second solution.
z=-1.1
The complete solution is the result of both the positive and negative portions of the solution.
z=1.1,-1.1
z=1.1,-1.1
z=1.1,-1.1
Solve for z z*z=1.21

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