12=-10+2k^2+20

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Solution for 12=-10+2k^2+20 equation: 


Simplifying
12 = -10 + 2k2 + 20

Reorder the terms:
12 = -10 + 20 + 2k2

Combine like terms: -10 + 20 = 10
12 = 10 + 2k2

Solving
12 = 10 + 2k2

Solving for variable 'k'.

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

Add '-2k2' to each side of the equation.
12 + -2k2 = 10 + 2k2 + -2k2

Combine like terms: 2k2 + -2k2 = 0
12 + -2k2 = 10 + 0
12 + -2k2 = 10

Add '-12' to each side of the equation.
12 + -12 + -2k2 = 10 + -12

Combine like terms: 12 + -12 = 0
0 + -2k2 = 10 + -12
-2k2 = 10 + -12

Combine like terms: 10 + -12 = -2
-2k2 = -2

Divide each side by '-2'.
k2 = 1

Simplifying
k2 = 1

Take the square root of each side:
k = {-1, 1}

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