5x^2+10x+4=0

Simple and best practice solution for 5x^2+10x+4=0 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+10x+4=0 equation:


Simplifying
5x2 + 10x + 4 = 0

Reorder the terms:
4 + 10x + 5x2 = 0

Solving
4 + 10x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
0.8 + 2x + x2 = 0

Move the constant term to the right:

Add '-0.8' to each side of the equation.
0.8 + 2x + -0.8 + x2 = 0 + -0.8

Reorder the terms:
0.8 + -0.8 + 2x + x2 = 0 + -0.8

Combine like terms: 0.8 + -0.8 = 0.0
0.0 + 2x + x2 = 0 + -0.8
2x + x2 = 0 + -0.8

Combine like terms: 0 + -0.8 = -0.8
2x + x2 = -0.8

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = -0.8 + 1

Reorder the terms:
1 + 2x + x2 = -0.8 + 1

Combine like terms: -0.8 + 1 = 0.2
1 + 2x + x2 = 0.2

Factor a perfect square on the left side:
(x + 1)(x + 1) = 0.2

Calculate the square root of the right side: 0.447213596

Break this problem into two subproblems by setting 
(x + 1) equal to 0.447213596 and -0.447213596.

Subproblem 1

x + 1 = 0.447213596 Simplifying x + 1 = 0.447213596 Reorder the terms: 1 + x = 0.447213596 Solving 1 + x = 0.447213596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 0.447213596 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0.447213596 + -1 x = 0.447213596 + -1 Combine like terms: 0.447213596 + -1 = -0.552786404 x = -0.552786404 Simplifying x = -0.552786404

Subproblem 2

x + 1 = -0.447213596 Simplifying x + 1 = -0.447213596 Reorder the terms: 1 + x = -0.447213596 Solving 1 + x = -0.447213596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -0.447213596 + -1 Combine like terms: 1 + -1 = 0 0 + x = -0.447213596 + -1 x = -0.447213596 + -1 Combine like terms: -0.447213596 + -1 = -1.447213596 x = -1.447213596 Simplifying x = -1.447213596

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.552786404, -1.447213596}

See similar equations:

| 5x^2-11x=12 | | x^2-5y^2+6=0 | | 35x^5+5x^4+25x^3=0 | | 2x+6=3x-4 | | 42074=.9*x+x | | 81+(6.7)x=45 | | x^5=2 | | (.9*x)+x=42074 | | 4x^2+12x+3=0 | | 4+7x+4x+7y=18 | | 5m^2=7m | | X^2+3x-4=14 | | 6a^2+10ab-4b^2=0 | | 25x^2-10xy+y^2=0 | | -2(2x-3)=5-(3+2x) | | 25x^4-10xy+y^2=0 | | -10x+5=3x+12 | | x^2+2x-8=2x^2-1 | | 3+5h-9=4(3h+4)-1 | | 2(3x+1)-5(x+2)=3x+8 | | -12b-3=21 | | -5x^2+2x+4=0 | | 10=11p-12 | | -11+11=8t-7t | | 11b+2= | | 20=z-11z | | 6y=28-4 | | 6-11+5=-8c+9 | | 3t^2+3t-90=0 | | x^2+y^2-6x+4y-51=0 | | -1=a+8 | | y^2+11=8y |

Equations solver categories