2x*2+7x-2=-1x^2+2x

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Solution for 2x*2+7x-2=-1x^2+2x equation:


Simplifying
2x * 2 + 7x + -2 = -1x2 + 2x

Reorder the terms for easier multiplication:
2 * 2x + 7x + -2 = -1x2 + 2x

Multiply 2 * 2
4x + 7x + -2 = -1x2 + 2x

Reorder the terms:
-2 + 4x + 7x = -1x2 + 2x

Combine like terms: 4x + 7x = 11x
-2 + 11x = -1x2 + 2x

Reorder the terms:
-2 + 11x = 2x + -1x2

Solving
-2 + 11x = 2x + -1x2

Solving for variable 'x'.

Combine like terms: 11x + -2x = 9x
-2 + 9x + x2 = 2x + -1x2 + -2x + x2

Reorder the terms:
-2 + 9x + x2 = 2x + -2x + -1x2 + x2

Combine like terms: 2x + -2x = 0
-2 + 9x + x2 = 0 + -1x2 + x2
-2 + 9x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-2 + 9x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 9x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + 9x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 9x + x2 = 0 + 2
9x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
9x + x2 = 2

The x term is 9x.  Take half its coefficient (4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
9x + 20.25 + x2 = 2 + 20.25

Reorder the terms:
20.25 + 9x + x2 = 2 + 20.25

Combine like terms: 2 + 20.25 = 22.25
20.25 + 9x + x2 = 22.25

Factor a perfect square on the left side:
(x + 4.5)(x + 4.5) = 22.25

Calculate the square root of the right side: 4.716990566

Break this problem into two subproblems by setting 
(x + 4.5) equal to 4.716990566 and -4.716990566.

Subproblem 1

x + 4.5 = 4.716990566 Simplifying x + 4.5 = 4.716990566 Reorder the terms: 4.5 + x = 4.716990566 Solving 4.5 + x = 4.716990566 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + x = 4.716990566 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + x = 4.716990566 + -4.5 x = 4.716990566 + -4.5 Combine like terms: 4.716990566 + -4.5 = 0.216990566 x = 0.216990566 Simplifying x = 0.216990566

Subproblem 2

x + 4.5 = -4.716990566 Simplifying x + 4.5 = -4.716990566 Reorder the terms: 4.5 + x = -4.716990566 Solving 4.5 + x = -4.716990566 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + x = -4.716990566 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + x = -4.716990566 + -4.5 x = -4.716990566 + -4.5 Combine like terms: -4.716990566 + -4.5 = -9.216990566 x = -9.216990566 Simplifying x = -9.216990566

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.216990566, -9.216990566}

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