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Mathematics 21 Online
OpenStudy (achu3p):

Solve for z: z^2 = 8z. Please show all work.

OpenStudy (anonymous):

z^2-8z=0 (0,8)

OpenStudy (anonymous):

First of all, if z = 0, the equation is verified. So, z = 0 is a solution. Then, if z isn't equal to 0, you divide by z each side of the equation to obtain z = 8. Thus, z = 0 and z = 8 are the two solutions of the equation.

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