x^2=8x+25

Simple and best practice solution for x^2=8x+25 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=8x+25 equation:


Simplifying
x2 = 8x + 25

Reorder the terms:
x2 = 25 + 8x

Solving
x2 = 25 + 8x

Solving for variable 'x'.

Reorder the terms:
-25 + -8x + x2 = 25 + 8x + -25 + -8x

Reorder the terms:
-25 + -8x + x2 = 25 + -25 + 8x + -8x

Combine like terms: 25 + -25 = 0
-25 + -8x + x2 = 0 + 8x + -8x
-25 + -8x + x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
-25 + -8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '25' to each side of the equation.
-25 + -8x + 25 + x2 = 0 + 25

Reorder the terms:
-25 + 25 + -8x + x2 = 0 + 25

Combine like terms: -25 + 25 = 0
0 + -8x + x2 = 0 + 25
-8x + x2 = 0 + 25

Combine like terms: 0 + 25 = 25
-8x + x2 = 25

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 25 + 16

Reorder the terms:
16 + -8x + x2 = 25 + 16

Combine like terms: 25 + 16 = 41
16 + -8x + x2 = 41

Factor a perfect square on the left side:
(x + -4)(x + -4) = 41

Calculate the square root of the right side: 6.403124237

Break this problem into two subproblems by setting 
(x + -4) equal to 6.403124237 and -6.403124237.

Subproblem 1

x + -4 = 6.403124237 Simplifying x + -4 = 6.403124237 Reorder the terms: -4 + x = 6.403124237 Solving -4 + x = 6.403124237 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 6.403124237 + 4 Combine like terms: -4 + 4 = 0 0 + x = 6.403124237 + 4 x = 6.403124237 + 4 Combine like terms: 6.403124237 + 4 = 10.403124237 x = 10.403124237 Simplifying x = 10.403124237

Subproblem 2

x + -4 = -6.403124237 Simplifying x + -4 = -6.403124237 Reorder the terms: -4 + x = -6.403124237 Solving -4 + x = -6.403124237 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -6.403124237 + 4 Combine like terms: -4 + 4 = 0 0 + x = -6.403124237 + 4 x = -6.403124237 + 4 Combine like terms: -6.403124237 + 4 = -2.403124237 x = -2.403124237 Simplifying x = -2.403124237

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.403124237, -2.403124237}

See similar equations:

| -4-9v=23 | | (4x+3)+(2x+12)= | | 32-18m=0 | | -3=n-8 | | 4x-4+3x+2=180 | | X(2x+9)=-7 | | -32-3/5x=-17 | | y+6=-13 | | 13-4s+s=25 | | -4+3x=5 | | 161/41/4-81/4+1=0 | | [8s-7]=[s-4] | | 2y+10x=18 | | 3x+2=3x-10 | | 2(x+4)=3x+6+x | | m=x+n/p | | 2(y-1)= | | 24.5^2=F/33.8^2 | | 0.6x-0.4x-2=3 | | 6(t-3)=7t+14 | | (8y+5)-(3y+2)= | | 3-2x=4x+18 | | -25+x=x+18 | | 1/3x-2=12/7-5/6x | | 2(x+4)=3x | | h-16=-24 | | J+3-11=55 | | 7x-8y=17 | | 7z-7-3z+3=0 | | 6(t-3)= | | (8y+5)-(3y-2)= | | 4.3-1.4(3+7)=-9.7 |

Equations solver categories