5+2x=x^2

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


Simplifying
5 + 2x = x2

Solving
5 + 2x = x2

Solving for variable 'x'.

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

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-5 + -2x + x2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -2x + 5 + x2 = 0 + 5

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

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

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

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 = 5 + 1

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

Combine like terms: 5 + 1 = 6
1 + -2x + x2 = 6

Factor a perfect square on the left side:
(x + -1)(x + -1) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(x + -1) equal to 2.449489743 and -2.449489743.

Subproblem 1

x + -1 = 2.449489743 Simplifying x + -1 = 2.449489743 Reorder the terms: -1 + x = 2.449489743 Solving -1 + x = 2.449489743 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 = 2.449489743 + 1 Combine like terms: -1 + 1 = 0 0 + x = 2.449489743 + 1 x = 2.449489743 + 1 Combine like terms: 2.449489743 + 1 = 3.449489743 x = 3.449489743 Simplifying x = 3.449489743

Subproblem 2

x + -1 = -2.449489743 Simplifying x + -1 = -2.449489743 Reorder the terms: -1 + x = -2.449489743 Solving -1 + x = -2.449489743 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 = -2.449489743 + 1 Combine like terms: -1 + 1 = 0 0 + x = -2.449489743 + 1 x = -2.449489743 + 1 Combine like terms: -2.449489743 + 1 = -1.449489743 x = -1.449489743 Simplifying x = -1.449489743

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.449489743, -1.449489743}

See similar equations:

| -3r-8=2r-3 | | 4x+40=6x+20 | | 9x^2+9x-3=0 | | -x+10+3x-13=-4 | | (5x-7)+(3x+17)=180 | | -5x+26=96 | | Y-5=8(x+7) | | 8x+3y=122 | | 3(13-29)=-3+9 | | 2x-5+11=24 | | h-53=25 | | 2(4x+2)-2x=9x-1 | | (x^11)-1=0 | | 5x^2=9x-2 | | 4(y+2)=3y-3 | | 8x+24-16=5x+8+3x | | 5(2k-2)=2(5k-7) | | 10x+50=180 | | 5(x+1)+4=2(x+-3) | | -2n-3+5=18 | | -30=2u+7(u+6) | | 48x=24 | | -1=3+2u | | 4(5+20x)-30x=10(12+x) | | 8x-48= | | 30r+-11=12+15r | | 0=x+12+(5x) | | f-4.1=8.6 | | 8y+2+25y-20=180 | | 5(6+a)+4a-9= | | 5(a+2)=7(3-a) | | 4x+3(2x+7)= |

Equations solver categories