9x^2+2kx-1=0

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Solution for 9x^2+2kx-1=0 equation:


Simplifying
9x2 + 2kx + -1 = 0

Reorder the terms:
-1 + 2kx + 9x2 = 0

Solving
-1 + 2kx + 9x2 = 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 + 2kx + 1 + 9x2 = 0 + 1

Reorder the terms:
-1 + 1 + 2kx + 9x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 2kx + 9x2 = 0 + 1
2kx + 9x2 = 0 + 1

Combine like terms: 0 + 1 = 1
2kx + 9x2 = 1

Add '-9x2' to each side of the equation.
2kx + 9x2 + -9x2 = 1 + -9x2

Combine like terms: 9x2 + -9x2 = 0
2kx + 0 = 1 + -9x2
2kx = 1 + -9x2

Divide each side by '2x'.
k = 0.5x-1 + -4.5x

Simplifying
k = 0.5x-1 + -4.5x

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