5x^2+13x+2=0

Simple and best practice solution for 5x^2+13x+2=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+13x+2=0 equation:


Simplifying
5x2 + 13x + 2 = 0

Reorder the terms:
2 + 13x + 5x2 = 0

Solving
2 + 13x + 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'.
0.4 + 2.6x + x2 = 0

Move the constant term to the right:

Add '-0.4' to each side of the equation.
0.4 + 2.6x + -0.4 + x2 = 0 + -0.4

Reorder the terms:
0.4 + -0.4 + 2.6x + x2 = 0 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + 2.6x + x2 = 0 + -0.4
2.6x + x2 = 0 + -0.4

Combine like terms: 0 + -0.4 = -0.4
2.6x + x2 = -0.4

The x term is 2.6x.  Take half its coefficient (1.3).
Square it (1.69) and add it to both sides.

Add '1.69' to each side of the equation.
2.6x + 1.69 + x2 = -0.4 + 1.69

Reorder the terms:
1.69 + 2.6x + x2 = -0.4 + 1.69

Combine like terms: -0.4 + 1.69 = 1.29
1.69 + 2.6x + x2 = 1.29

Factor a perfect square on the left side:
(x + 1.3)(x + 1.3) = 1.29

Calculate the square root of the right side: 1.135781669

Break this problem into two subproblems by setting 
(x + 1.3) equal to 1.135781669 and -1.135781669.

Subproblem 1

x + 1.3 = 1.135781669 Simplifying x + 1.3 = 1.135781669 Reorder the terms: 1.3 + x = 1.135781669 Solving 1.3 + x = 1.135781669 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.3' to each side of the equation. 1.3 + -1.3 + x = 1.135781669 + -1.3 Combine like terms: 1.3 + -1.3 = 0.0 0.0 + x = 1.135781669 + -1.3 x = 1.135781669 + -1.3 Combine like terms: 1.135781669 + -1.3 = -0.164218331 x = -0.164218331 Simplifying x = -0.164218331

Subproblem 2

x + 1.3 = -1.135781669 Simplifying x + 1.3 = -1.135781669 Reorder the terms: 1.3 + x = -1.135781669 Solving 1.3 + x = -1.135781669 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.3' to each side of the equation. 1.3 + -1.3 + x = -1.135781669 + -1.3 Combine like terms: 1.3 + -1.3 = 0.0 0.0 + x = -1.135781669 + -1.3 x = -1.135781669 + -1.3 Combine like terms: -1.135781669 + -1.3 = -2.435781669 x = -2.435781669 Simplifying x = -2.435781669

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.164218331, -2.435781669}

See similar equations:

| -4(5t-5)+2t=8t-3 | | k/6= | | 39.5+8.74= | | -5(3x+1)=-30 | | 2y^2+7y+7/2 | | -25+15=m-9 | | .50x+.15(30)=44.5 | | -6+2n=6(n+3) | | -4(3t-4)+9t=3t-7 | | -6=b/16 | | 12(x+4)-4x=2(4x+4)-10 | | 4(2a-1)=20 | | 5x+7=2x-1 | | 5(h+3)=-25 | | n=a-k/5k | | 5x+7=2x-7 | | 2+x/5=x/3+4 | | 6x-9=6(x-8) | | 5+3[2-13(x-1)]=17-18x | | -23=-za-10+a | | 2w=w+2 | | 13x+-3=36 | | 4x+3-2x=x+4 | | -14=2/9(9-2b) | | 32=8m | | -32=7/8(3w-1) | | 6882439+8294992+288483929= | | -8*x+15=-9 | | 4=2/9(9-26) | | 8a-15-6a=85-50 | | 2x+8/5=3x-1 | | -7+x=2x+6x |

Equations solver categories