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Simplifying
2z2 + 5 = 205
Reorder the terms:
5 + 2z2 = 205
Solving
5 + 2z2 = 205
Solving for variable 'z'.
Move all terms containing z to the left, all other terms to the right.
Add '-5' to each side of the equation.
5 + -5 + 2z2 = 205 + -5
Combine like terms: 5 + -5 = 0
0 + 2z2 = 205 + -5
2z2 = 205 + -5
Combine like terms: 205 + -5 = 200
2z2 = 200
Divide each side by '2'.
z2 = 100
Simplifying
z2 = 100
Take the square root of each side:
z = {-10, 10}
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