x^2-1.5x-.35=0

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Solution for x^2-1.5x-.35=0 equation:


Simplifying
x2 + -1.5x + -0.35 = 0

Reorder the terms:
-0.35 + -1.5x + x2 = 0

Solving
-0.35 + -1.5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '0.35' to each side of the equation.
-0.35 + -1.5x + 0.35 + x2 = 0 + 0.35

Reorder the terms:
-0.35 + 0.35 + -1.5x + x2 = 0 + 0.35

Combine like terms: -0.35 + 0.35 = 0.00
0.00 + -1.5x + x2 = 0 + 0.35
-1.5x + x2 = 0 + 0.35

Combine like terms: 0 + 0.35 = 0.35
-1.5x + x2 = 0.35

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = 0.35 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = 0.35 + 0.5625

Combine like terms: 0.35 + 0.5625 = 0.9125
0.5625 + -1.5x + x2 = 0.9125

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 0.9125

Calculate the square root of the right side: 0.955248659

Break this problem into two subproblems by setting 
(x + -0.75) equal to 0.955248659 and -0.955248659.

Subproblem 1

x + -0.75 = 0.955248659 Simplifying x + -0.75 = 0.955248659 Reorder the terms: -0.75 + x = 0.955248659 Solving -0.75 + x = 0.955248659 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 0.955248659 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 0.955248659 + 0.75 x = 0.955248659 + 0.75 Combine like terms: 0.955248659 + 0.75 = 1.705248659 x = 1.705248659 Simplifying x = 1.705248659

Subproblem 2

x + -0.75 = -0.955248659 Simplifying x + -0.75 = -0.955248659 Reorder the terms: -0.75 + x = -0.955248659 Solving -0.75 + x = -0.955248659 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -0.955248659 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -0.955248659 + 0.75 x = -0.955248659 + 0.75 Combine like terms: -0.955248659 + 0.75 = -0.205248659 x = -0.205248659 Simplifying x = -0.205248659

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.705248659, -0.205248659}

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