9x+3=10x^2

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Solution for 9x+3=10x^2 equation:


Simplifying
9x + 3 = 10x2

Reorder the terms:
3 + 9x = 10x2

Solving
3 + 9x = 10x2

Solving for variable 'x'.

Combine like terms: 10x2 + -10x2 = 0
3 + 9x + -10x2 = 0

Begin completing the square.  Divide all terms by
-10 the coefficient of the squared term: 

Divide each side by '-10'.
-0.3 + -0.9x + x2 = 0

Move the constant term to the right:

Add '0.3' to each side of the equation.
-0.3 + -0.9x + 0.3 + x2 = 0 + 0.3

Reorder the terms:
-0.3 + 0.3 + -0.9x + x2 = 0 + 0.3

Combine like terms: -0.3 + 0.3 = 0.0
0.0 + -0.9x + x2 = 0 + 0.3
-0.9x + x2 = 0 + 0.3

Combine like terms: 0 + 0.3 = 0.3
-0.9x + x2 = 0.3

The x term is -0.9x.  Take half its coefficient (-0.45).
Square it (0.2025) and add it to both sides.

Add '0.2025' to each side of the equation.
-0.9x + 0.2025 + x2 = 0.3 + 0.2025

Reorder the terms:
0.2025 + -0.9x + x2 = 0.3 + 0.2025

Combine like terms: 0.3 + 0.2025 = 0.5025
0.2025 + -0.9x + x2 = 0.5025

Factor a perfect square on the left side:
(x + -0.45)(x + -0.45) = 0.5025

Calculate the square root of the right side: 0.708872344

Break this problem into two subproblems by setting 
(x + -0.45) equal to 0.708872344 and -0.708872344.

Subproblem 1

x + -0.45 = 0.708872344 Simplifying x + -0.45 = 0.708872344 Reorder the terms: -0.45 + x = 0.708872344 Solving -0.45 + x = 0.708872344 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.45' to each side of the equation. -0.45 + 0.45 + x = 0.708872344 + 0.45 Combine like terms: -0.45 + 0.45 = 0.00 0.00 + x = 0.708872344 + 0.45 x = 0.708872344 + 0.45 Combine like terms: 0.708872344 + 0.45 = 1.158872344 x = 1.158872344 Simplifying x = 1.158872344

Subproblem 2

x + -0.45 = -0.708872344 Simplifying x + -0.45 = -0.708872344 Reorder the terms: -0.45 + x = -0.708872344 Solving -0.45 + x = -0.708872344 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.45' to each side of the equation. -0.45 + 0.45 + x = -0.708872344 + 0.45 Combine like terms: -0.45 + 0.45 = 0.00 0.00 + x = -0.708872344 + 0.45 x = -0.708872344 + 0.45 Combine like terms: -0.708872344 + 0.45 = -0.258872344 x = -0.258872344 Simplifying x = -0.258872344

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.158872344, -0.258872344}

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