# Solve for z z*z=9*10*15*6 z⋅z=9⋅10⋅15⋅6
Multiply z by z.
z2=9⋅10⋅15⋅6
Simplify 9⋅10⋅15⋅6.
Multiply 9 by 10.
z2=90⋅15⋅6
Multiply 90 by 15.
z2=1350⋅6
Multiply 1350 by 6.
z2=8100
z2=8100
Take the square root of both sides of the equation to eliminate the exponent on the left side.
z=±8100
The complete solution is the result of both the positive and negative portions of the solution.
Simplify the right side of the equation.
Rewrite 8100 as 902.
z=±902
Pull terms out from under the radical, assuming positive real numbers.
z=±90
z=±90
The complete solution is the result of both the positive and negative portions of the solution.
First, use the positive value of the ± to find the first solution.
z=90
Next, use the negative value of the ± to find the second solution.
z=-90
The complete solution is the result of both the positive and negative portions of the solution.
z=90,-90
z=90,-90
z=90,-90
Solve for z z*z=9*10*15*6

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