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Simplifying
3k2 + -7 = 56
Reorder the terms:
-7 + 3k2 = 56
Solving
-7 + 3k2 = 56
Solving for variable 'k'.
Move all terms containing k to the left, all other terms to the right.
Add '7' to each side of the equation.
-7 + 7 + 3k2 = 56 + 7
Combine like terms: -7 + 7 = 0
0 + 3k2 = 56 + 7
3k2 = 56 + 7
Combine like terms: 56 + 7 = 63
3k2 = 63
Divide each side by '3'.
k2 = 21
Simplifying
k2 = 21
Take the square root of each side:
k = {-4.582575695, 4.582575695}
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