x(x-3)=35

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Solution for x(x-3)=35 equation:


Simplifying
x(x + -3) = 35

Reorder the terms:
x(-3 + x) = 35
(-3 * x + x * x) = 35
(-3x + x2) = 35

Solving
-3x + x2 = 35

Solving for variable 'x'.

Reorder the terms:
-35 + -3x + x2 = 35 + -35

Combine like terms: 35 + -35 = 0
-35 + -3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '35' to each side of the equation.
-35 + -3x + 35 + x2 = 0 + 35

Reorder the terms:
-35 + 35 + -3x + x2 = 0 + 35

Combine like terms: -35 + 35 = 0
0 + -3x + x2 = 0 + 35
-3x + x2 = 0 + 35

Combine like terms: 0 + 35 = 35
-3x + x2 = 35

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 = 35 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 35 + 2.25

Combine like terms: 35 + 2.25 = 37.25
2.25 + -3x + x2 = 37.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 37.25

Calculate the square root of the right side: 6.103277808

Break this problem into two subproblems by setting 
(x + -1.5) equal to 6.103277808 and -6.103277808.

Subproblem 1

x + -1.5 = 6.103277808 Simplifying x + -1.5 = 6.103277808 Reorder the terms: -1.5 + x = 6.103277808 Solving -1.5 + x = 6.103277808 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 = 6.103277808 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 6.103277808 + 1.5 x = 6.103277808 + 1.5 Combine like terms: 6.103277808 + 1.5 = 7.603277808 x = 7.603277808 Simplifying x = 7.603277808

Subproblem 2

x + -1.5 = -6.103277808 Simplifying x + -1.5 = -6.103277808 Reorder the terms: -1.5 + x = -6.103277808 Solving -1.5 + x = -6.103277808 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 = -6.103277808 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -6.103277808 + 1.5 x = -6.103277808 + 1.5 Combine like terms: -6.103277808 + 1.5 = -4.603277808 x = -4.603277808 Simplifying x = -4.603277808

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.603277808, -4.603277808}

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