5x^2+2x=1

Simple and best practice solution for 5x^2+2x=1 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+2x=1 equation:


Simplifying
5x2 + 2x = 1

Reorder the terms:
2x + 5x2 = 1

Solving
2x + 5x2 = 1

Solving for variable 'x'.

Reorder the terms:
-1 + 2x + 5x2 = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + 2x + 5x2 = 0

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

Divide each side by '5'.
-0.2 + 0.4x + x2 = 0

Move the constant term to the right:

Add '0.2' to each side of the equation.
-0.2 + 0.4x + 0.2 + x2 = 0 + 0.2

Reorder the terms:
-0.2 + 0.2 + 0.4x + x2 = 0 + 0.2

Combine like terms: -0.2 + 0.2 = 0.0
0.0 + 0.4x + x2 = 0 + 0.2
0.4x + x2 = 0 + 0.2

Combine like terms: 0 + 0.2 = 0.2
0.4x + x2 = 0.2

The x term is 0.4x.  Take half its coefficient (0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
0.4x + 0.04 + x2 = 0.2 + 0.04

Reorder the terms:
0.04 + 0.4x + x2 = 0.2 + 0.04

Combine like terms: 0.2 + 0.04 = 0.24
0.04 + 0.4x + x2 = 0.24

Factor a perfect square on the left side:
(x + 0.2)(x + 0.2) = 0.24

Calculate the square root of the right side: 0.489897949

Break this problem into two subproblems by setting 
(x + 0.2) equal to 0.489897949 and -0.489897949.

Subproblem 1

x + 0.2 = 0.489897949 Simplifying x + 0.2 = 0.489897949 Reorder the terms: 0.2 + x = 0.489897949 Solving 0.2 + x = 0.489897949 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + x = 0.489897949 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + x = 0.489897949 + -0.2 x = 0.489897949 + -0.2 Combine like terms: 0.489897949 + -0.2 = 0.289897949 x = 0.289897949 Simplifying x = 0.289897949

Subproblem 2

x + 0.2 = -0.489897949 Simplifying x + 0.2 = -0.489897949 Reorder the terms: 0.2 + x = -0.489897949 Solving 0.2 + x = -0.489897949 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + x = -0.489897949 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + x = -0.489897949 + -0.2 x = -0.489897949 + -0.2 Combine like terms: -0.489897949 + -0.2 = -0.689897949 x = -0.689897949 Simplifying x = -0.689897949

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.289897949, -0.689897949}

See similar equations:

| 21n-48=120 | | x-33=232 | | X^2=5-20x | | 2x+11y=0 | | 6x-14=7x+8 | | (7-3x)2+x=5-3(5-x) | | 15+9=3-2+9+10 | | 8n-4=6x+6 | | 5-2n=10+3n | | 9x+6x=108 | | 1.5(1+3r)=0.6(2-3r) | | 21+32+x=559 | | 8y-5y-11=21.85 | | 4-x+1=8 | | 15+9=3-2+9+20 | | 6x=15x-13 | | 23+8+y=52 | | 5(2+x)=3(1+x)-2x-4(2-x) | | 4y+3x-6y+2x= | | (x^2*y^2)dx+(((x^3)*y)+y+3)dy=0 | | 4(5+3x)4(4+5x)=15 | | X=I44X/Y | | 5/k=-20 | | 8.8v=-18.2+2.3v | | 7x-35=180 | | 4/3*-21/4 | | 8(y-9)=9y-72 | | 12r+5+(-7r)+8= | | 0.2x-0.3=2.7 | | f(x)=4x+-16 | | X+78=682 | | 7/16=n/6 |

Equations solver categories