x^2=2x+28

Simple and best practice solution for x^2=2x+28 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=2x+28 equation:


Simplifying
x2 = 2x + 28

Reorder the terms:
x2 = 28 + 2x

Solving
x2 = 28 + 2x

Solving for variable 'x'.

Reorder the terms:
-28 + -2x + x2 = 28 + 2x + -28 + -2x

Reorder the terms:
-28 + -2x + x2 = 28 + -28 + 2x + -2x

Combine like terms: 28 + -28 = 0
-28 + -2x + x2 = 0 + 2x + -2x
-28 + -2x + x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
-28 + -2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '28' to each side of the equation.
-28 + -2x + 28 + x2 = 0 + 28

Reorder the terms:
-28 + 28 + -2x + x2 = 0 + 28

Combine like terms: -28 + 28 = 0
0 + -2x + x2 = 0 + 28
-2x + x2 = 0 + 28

Combine like terms: 0 + 28 = 28
-2x + x2 = 28

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 = 28 + 1

Reorder the terms:
1 + -2x + x2 = 28 + 1

Combine like terms: 28 + 1 = 29
1 + -2x + x2 = 29

Factor a perfect square on the left side:
(x + -1)(x + -1) = 29

Calculate the square root of the right side: 5.385164807

Break this problem into two subproblems by setting 
(x + -1) equal to 5.385164807 and -5.385164807.

Subproblem 1

x + -1 = 5.385164807 Simplifying x + -1 = 5.385164807 Reorder the terms: -1 + x = 5.385164807 Solving -1 + x = 5.385164807 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 = 5.385164807 + 1 Combine like terms: -1 + 1 = 0 0 + x = 5.385164807 + 1 x = 5.385164807 + 1 Combine like terms: 5.385164807 + 1 = 6.385164807 x = 6.385164807 Simplifying x = 6.385164807

Subproblem 2

x + -1 = -5.385164807 Simplifying x + -1 = -5.385164807 Reorder the terms: -1 + x = -5.385164807 Solving -1 + x = -5.385164807 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 = -5.385164807 + 1 Combine like terms: -1 + 1 = 0 0 + x = -5.385164807 + 1 x = -5.385164807 + 1 Combine like terms: -5.385164807 + 1 = -4.385164807 x = -4.385164807 Simplifying x = -4.385164807

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.385164807, -4.385164807}

See similar equations:

| x+5y=-21 | | 9.9+3.6= | | 180=x+.25x | | 18x-6=3x-26 | | 6x^2-5x-18=0 | | 1=4(5-x)+3(-5) | | T(477)=-6+3(n-1) | | 6w-40=220 | | 15x-3=35x+1 | | 7x=7x+13 | | 10xy^3(8x^5)(y^3)= | | 5a+8a=39 | | 110=150+85x | | 8x+7=-2x+5 | | 3(x+14)+3x-20+4(x+6)+12x= | | -7m+13+8m=-3 | | 3p-8=-14+4p | | (2v-3)(7-v)=0 | | 4x^3-18x^2-14x= | | X/6.7=12.3 | | -24=4+6(n+5) | | 7=25 | | 8x(13+3)+36= | | 4a-3(a-6)=4+29 | | 3(x+14)+3x-20+4(x+6)+12=x | | 4(1-2x)=5(x+8) | | -3=-4x+2 | | 2(2y)+8y=1 | | 41-y=2y+8 | | -2(-5+21)+2y=6 | | 22+10x=10+13x | | 5x-3x+7=3(x+2) |

Equations solver categories