5x^2=5-9x

Simple and best practice solution for 5x^2=5-9x equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 5x^2=5-9x equation:


Simplifying
5x2 = 5 + -9x

Solving
5x2 = 5 + -9x

Solving for variable 'x'.

Reorder the terms:
-5 + 9x + 5x2 = 5 + -9x + -5 + 9x

Reorder the terms:
-5 + 9x + 5x2 = 5 + -5 + -9x + 9x

Combine like terms: 5 + -5 = 0
-5 + 9x + 5x2 = 0 + -9x + 9x
-5 + 9x + 5x2 = -9x + 9x

Combine like terms: -9x + 9x = 0
-5 + 9x + 5x2 = 0

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

Divide each side by '5'.
-1 + 1.8x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 1.8x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + 1.8x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 1.8x + x2 = 0 + 1
1.8x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
1.8x + x2 = 1

The x term is 1.8x.  Take half its coefficient (0.9).
Square it (0.81) and add it to both sides.

Add '0.81' to each side of the equation.
1.8x + 0.81 + x2 = 1 + 0.81

Reorder the terms:
0.81 + 1.8x + x2 = 1 + 0.81

Combine like terms: 1 + 0.81 = 1.81
0.81 + 1.8x + x2 = 1.81

Factor a perfect square on the left side:
(x + 0.9)(x + 0.9) = 1.81

Calculate the square root of the right side: 1.345362405

Break this problem into two subproblems by setting 
(x + 0.9) equal to 1.345362405 and -1.345362405.

Subproblem 1

x + 0.9 = 1.345362405 Simplifying x + 0.9 = 1.345362405 Reorder the terms: 0.9 + x = 1.345362405 Solving 0.9 + x = 1.345362405 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9' to each side of the equation. 0.9 + -0.9 + x = 1.345362405 + -0.9 Combine like terms: 0.9 + -0.9 = 0.0 0.0 + x = 1.345362405 + -0.9 x = 1.345362405 + -0.9 Combine like terms: 1.345362405 + -0.9 = 0.445362405 x = 0.445362405 Simplifying x = 0.445362405

Subproblem 2

x + 0.9 = -1.345362405 Simplifying x + 0.9 = -1.345362405 Reorder the terms: 0.9 + x = -1.345362405 Solving 0.9 + x = -1.345362405 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9' to each side of the equation. 0.9 + -0.9 + x = -1.345362405 + -0.9 Combine like terms: 0.9 + -0.9 = 0.0 0.0 + x = -1.345362405 + -0.9 x = -1.345362405 + -0.9 Combine like terms: -1.345362405 + -0.9 = -2.245362405 x = -2.245362405 Simplifying x = -2.245362405

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.445362405, -2.245362405}

See similar equations:

| 0.5x+8=9 | | 2y=-2x-4 | | 0.5x+8=15 | | 2l+8=6l+2 | | 0.5x+8=8 | | 10-2x+3y=2 | | 0.5x+8=5 | | 3x+3=39 | | 0.5x+8=3 | | (2x-1)(1+2x)=4x(x-1)-10 | | 7x-1=34 | | 0.9w-0.8w+0.4w=3 | | (x-2)(x+2)=7 | | 7-3x=28 | | 7+y=21 | | 2x+6y=26 | | -2(4-3x)=2-(8-x) | | 6x-7y=-104 | | 3x+28=4-9x | | 2X^2+4X-100=0 | | 3R-12R=45 | | P^2-9p+8=0 | | 3b^2-2b+5=0 | | 7x+27=3x+119 | | 5x^2-14x+2=0 | | 9m=4 | | 5x+13=-99-9x | | 6x-7y=3 | | 5-5y=-45 | | 2x(5x-4)=0 | | 8x^2+11x=0 | | 2x+30=9x-54 |

Equations solver categories