5k(-2k)-(-1)=

Solution for 5k(-2k)-(-1)= equation:

Simplifying
5k(-2k) + -1(-1) = 0

Remove parenthesis around (-2k)
5k * -2k + -1(-1) = 0

Reorder the terms for easier multiplication:
5 * -2k * k + -1(-1) = 0

Multiply 5 * -2
-10k * k + -1(-1) = 0

Multiply k * k
-10k2 + -1(-1) = 0

Multiply -1 * -1
-10k2 + 1 = 0

Reorder the terms:
1 + -10k2 = 0

Solving
1 + -10k2 = 0

Solving for variable 'k'.

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

Add '-1' to each side of the equation.
1 + -1 + -10k2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -10k2 = 0 + -1
-10k2 = 0 + -1

Combine like terms: 0 + -1 = -1
-10k2 = -1

Divide each side by '-10'.
k2 = 0.1

Simplifying
k2 = 0.1

Take the square root of each side:
k = {-0.316227766, 0.316227766}