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Simplifying
z2 + 3 = 90
Reorder the terms:
3 + z2 = 90
Solving
3 + z2 = 90
Solving for variable 'z'.
Move all terms containing z to the left, all other terms to the right.
Add '-3' to each side of the equation.
3 + -3 + z2 = 90 + -3
Combine like terms: 3 + -3 = 0
0 + z2 = 90 + -3
z2 = 90 + -3
Combine like terms: 90 + -3 = 87
z2 = 87
Simplifying
z2 = 87
Take the square root of each side:
z = {-9.327379053, 9.327379053}
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