49x^2+kx+81=0

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Solution for 49x^2+kx+81=0 equation:


Simplifying
49x2 + kx + 81 = 0

Reorder the terms:
81 + kx + 49x2 = 0

Solving
81 + kx + 49x2 = 0

Solving for variable 'k'.

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

Add '-81' to each side of the equation.
81 + kx + -81 + 49x2 = 0 + -81

Reorder the terms:
81 + -81 + kx + 49x2 = 0 + -81

Combine like terms: 81 + -81 = 0
0 + kx + 49x2 = 0 + -81
kx + 49x2 = 0 + -81

Combine like terms: 0 + -81 = -81
kx + 49x2 = -81

Add '-49x2' to each side of the equation.
kx + 49x2 + -49x2 = -81 + -49x2

Combine like terms: 49x2 + -49x2 = 0
kx + 0 = -81 + -49x2
kx = -81 + -49x2

Divide each side by 'x'.
k = -81x-1 + -49x

Simplifying
k = -81x-1 + -49x

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