0=-7+k^2

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Solution for 0=-7+k^2 equation: 


Simplifying
0 = -7 + k2

Solving
0 = -7 + k2

Solving for variable 'k'.

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

Add '-1k2' to each side of the equation.
0 + -1k2 = -7 + k2 + -1k2
Remove the zero:
-1k2 = -7 + k2 + -1k2

Combine like terms: k2 + -1k2 = 0
-1k2 = -7 + 0
-1k2 = -7

Divide each side by '-1'.
k2 = 7

Simplifying
k2 = 7

Take the square root of each side:
k = {-2.645751311, 2.645751311}

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