7z^2+4=1187

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Solution for 7z^2+4=1187 equation: 


Simplifying
7z2 + 4 = 1187

Reorder the terms:
4 + 7z2 = 1187

Solving
4 + 7z2 = 1187

Solving for variable 'z'.

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

Add '-4' to each side of the equation.
4 + -4 + 7z2 = 1187 + -4

Combine like terms: 4 + -4 = 0
0 + 7z2 = 1187 + -4
7z2 = 1187 + -4

Combine like terms: 1187 + -4 = 1183
7z2 = 1183

Divide each side by '7'.
z2 = 169

Simplifying
z2 = 169

Take the square root of each side:
z = {-13, 13}

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