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Simplifying
3z2 + -834 = 138
Reorder the terms:
-834 + 3z2 = 138
Solving
-834 + 3z2 = 138
Solving for variable 'z'.
Move all terms containing z to the left, all other terms to the right.
Add '834' to each side of the equation.
-834 + 834 + 3z2 = 138 + 834
Combine like terms: -834 + 834 = 0
0 + 3z2 = 138 + 834
3z2 = 138 + 834
Combine like terms: 138 + 834 = 972
3z2 = 972
Divide each side by '3'.
z2 = 324
Simplifying
z2 = 324
Take the square root of each side:
z = {-18, 18}
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