x^2+x=3.2

Simple and best practice solution for x^2+x=3.2 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 x^2+x=3.2 equation:


Simplifying
x2 + x = 3.2

Reorder the terms:
x + x2 = 3.2

Solving
x + x2 = 3.2

Solving for variable 'x'.

Reorder the terms:
-3.2 + x + x2 = 3.2 + -3.2

Combine like terms: 3.2 + -3.2 = 0.0
-3.2 + x + x2 = 0.0

Begin completing the square.

Move the constant term to the right:

Add '3.2' to each side of the equation.
-3.2 + x + 3.2 + x2 = 0.0 + 3.2

Reorder the terms:
-3.2 + 3.2 + x + x2 = 0.0 + 3.2

Combine like terms: -3.2 + 3.2 = 0.0
0.0 + x + x2 = 0.0 + 3.2
x + x2 = 0.0 + 3.2

Combine like terms: 0.0 + 3.2 = 3.2
x + x2 = 3.2

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
x + 0.25 + x2 = 3.2 + 0.25

Reorder the terms:
0.25 + x + x2 = 3.2 + 0.25

Combine like terms: 3.2 + 0.25 = 3.45
0.25 + x + x2 = 3.45

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 3.45

Calculate the square root of the right side: 1.857417562

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.857417562 and -1.857417562.

Subproblem 1

x + 0.5 = 1.857417562 Simplifying x + 0.5 = 1.857417562 Reorder the terms: 0.5 + x = 1.857417562 Solving 0.5 + x = 1.857417562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.857417562 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.857417562 + -0.5 x = 1.857417562 + -0.5 Combine like terms: 1.857417562 + -0.5 = 1.357417562 x = 1.357417562 Simplifying x = 1.357417562

Subproblem 2

x + 0.5 = -1.857417562 Simplifying x + 0.5 = -1.857417562 Reorder the terms: 0.5 + x = -1.857417562 Solving 0.5 + x = -1.857417562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.857417562 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.857417562 + -0.5 x = -1.857417562 + -0.5 Combine like terms: -1.857417562 + -0.5 = -2.357417562 x = -2.357417562 Simplifying x = -2.357417562

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.357417562, -2.357417562}

See similar equations:

| -3(2+2b)-5(3b+2)=-37 | | t+4.6=5.5 | | 20736=2h(7+5) | | 9(x-1)/3=6(x+4)/12 | | 4=(18-3w) | | 9+x/1.25=15.25 | | 12/x+4=8 | | 12y=45 | | 500+x/90=5000 | | 5.7+12.8=4.7x | | 18=1-7n+3 | | 3m^2-27m+24=0 | | -(5X-2)-(4X-9)+4=-5(X-9)-(8X+7)+2 | | x/10=x/9-1 | | -4x=2/3 | | -6.3+4.9=8.2z-2.4 | | 3(1-5x)=93 | | 0.125x^2-x-16=0 | | 6X-12-4X=6X-9 | | 14+w/10=24 | | 2/3x+y=1 | | 2(x-3)-2=5x-3(1+x) | | 6[4(3b-7)-(9b+10)]= | | 0.3x+0.3=0.7x-0.9 | | 7/8x=3/4 | | 4k+mn=n-33 | | 5.16+p=15.48 | | 7x^2/3-343=0 | | 1/5(a+4)=1/4(4-a) | | 11y-10y=-22+13 | | 700+x(30)=4300 | | -20=-4m-m |

Equations solver categories