x^2-mx-4=0

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Solution for x^2-mx-4=0 equation:


Simplifying
x2 + -1mx + -4 = 0

Reorder the terms:
-4 + -1mx + x2 = 0

Solving
-4 + -1mx + x2 = 0

Solving for variable 'm'.

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

Add '4' to each side of the equation.
-4 + -1mx + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + -1mx + x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -1mx + x2 = 0 + 4
-1mx + x2 = 0 + 4

Combine like terms: 0 + 4 = 4
-1mx + x2 = 4

Add '-1x2' to each side of the equation.
-1mx + x2 + -1x2 = 4 + -1x2

Combine like terms: x2 + -1x2 = 0
-1mx + 0 = 4 + -1x2
-1mx = 4 + -1x2

Divide each side by '-1x'.
m = -4x-1 + x

Simplifying
m = -4x-1 + x

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