x^2-98-3x=0

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Solution for x^2-98-3x=0 equation:


Simplifying
x2 + -98 + -3x = 0

Reorder the terms:
-98 + -3x + x2 = 0

Solving
-98 + -3x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '98' to each side of the equation.
-98 + -3x + 98 + x2 = 0 + 98

Reorder the terms:
-98 + 98 + -3x + x2 = 0 + 98

Combine like terms: -98 + 98 = 0
0 + -3x + x2 = 0 + 98
-3x + x2 = 0 + 98

Combine like terms: 0 + 98 = 98
-3x + x2 = 98

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 98 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 98 + 2.25

Combine like terms: 98 + 2.25 = 100.25
2.25 + -3x + x2 = 100.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 100.25

Calculate the square root of the right side: 10.012492197

Break this problem into two subproblems by setting 
(x + -1.5) equal to 10.012492197 and -10.012492197.

Subproblem 1

x + -1.5 = 10.012492197 Simplifying x + -1.5 = 10.012492197 Reorder the terms: -1.5 + x = 10.012492197 Solving -1.5 + x = 10.012492197 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 10.012492197 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 10.012492197 + 1.5 x = 10.012492197 + 1.5 Combine like terms: 10.012492197 + 1.5 = 11.512492197 x = 11.512492197 Simplifying x = 11.512492197

Subproblem 2

x + -1.5 = -10.012492197 Simplifying x + -1.5 = -10.012492197 Reorder the terms: -1.5 + x = -10.012492197 Solving -1.5 + x = -10.012492197 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -10.012492197 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -10.012492197 + 1.5 x = -10.012492197 + 1.5 Combine like terms: -10.012492197 + 1.5 = -8.512492197 x = -8.512492197 Simplifying x = -8.512492197

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.512492197, -8.512492197}

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