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Simplifying
10k2 + -5 = 645
Reorder the terms:
-5 + 10k2 = 645
Solving
-5 + 10k2 = 645
Solving for variable 'k'.
Move all terms containing k to the left, all other terms to the right.
Add '5' to each side of the equation.
-5 + 5 + 10k2 = 645 + 5
Combine like terms: -5 + 5 = 0
0 + 10k2 = 645 + 5
10k2 = 645 + 5
Combine like terms: 645 + 5 = 650
10k2 = 650
Divide each side by '10'.
k2 = 65
Simplifying
k2 = 65
Take the square root of each side:
k = {-8.062257748, 8.062257748}
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