7z^2=28

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Solution for 7z^2=28 equation: 


Simplifying
7z2 = 28

Solving
7z2 = 28

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Divide each side by '7'.
z2 = 4

Simplifying
z2 = 4

Take the square root of each side:
z = {-2, 2}

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