x^2-9=10x

Simple and best practice solution for x^2-9=10x 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^2-9=10x equation:


Simplifying
x2 + -9 = 10x

Reorder the terms:
-9 + x2 = 10x

Solving
-9 + x2 = 10x

Solving for variable 'x'.

Reorder the terms:
-9 + -10x + x2 = 10x + -10x

Combine like terms: 10x + -10x = 0
-9 + -10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '9' to each side of the equation.
-9 + -10x + 9 + x2 = 0 + 9

Reorder the terms:
-9 + 9 + -10x + x2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -10x + x2 = 0 + 9
-10x + x2 = 0 + 9

Combine like terms: 0 + 9 = 9
-10x + x2 = 9

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = 9 + 25

Reorder the terms:
25 + -10x + x2 = 9 + 25

Combine like terms: 9 + 25 = 34
25 + -10x + x2 = 34

Factor a perfect square on the left side:
(x + -5)(x + -5) = 34

Calculate the square root of the right side: 5.830951895

Break this problem into two subproblems by setting 
(x + -5) equal to 5.830951895 and -5.830951895.

Subproblem 1

x + -5 = 5.830951895 Simplifying x + -5 = 5.830951895 Reorder the terms: -5 + x = 5.830951895 Solving -5 + x = 5.830951895 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 5.830951895 + 5 Combine like terms: -5 + 5 = 0 0 + x = 5.830951895 + 5 x = 5.830951895 + 5 Combine like terms: 5.830951895 + 5 = 10.830951895 x = 10.830951895 Simplifying x = 10.830951895

Subproblem 2

x + -5 = -5.830951895 Simplifying x + -5 = -5.830951895 Reorder the terms: -5 + x = -5.830951895 Solving -5 + x = -5.830951895 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -5.830951895 + 5 Combine like terms: -5 + 5 = 0 0 + x = -5.830951895 + 5 x = -5.830951895 + 5 Combine like terms: -5.830951895 + 5 = -0.830951895 x = -0.830951895 Simplifying x = -0.830951895

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.830951895, -0.830951895}

See similar equations:

| 12m-3=4-2m | | 3m+45m=15 | | 7-x=8x+7 | | 3(x+4)=7x+7-4x+5 | | 3x-6=3(x+2) | | 11x-8-29=52 | | 20-7=X | | 2(-12)-10= | | 5x-6y=11 | | x^2-60=-11x | | 7(n+2)+6(n+7)= | | 6=3(x-3)-(x-5) | | 9x-2y=6 | | 4x-101+10x=81 | | 5(2x-5)-5=5(x-3)+25 | | 14m+7n-(10m-3n)= | | 2x-(7x+7)=7x-43 | | (7x+4)=2x-1 | | -5x+10x-44=76 | | -7x+2=-68 | | 3(x+2)=6(x-1)+9 | | 26=2(10-x) | | 8y+6(y+2)=33 | | 14x-23=-135 | | 3m^2+6m+2=0 | | -103-6x+12x=71 | | 4y+13=6 | | 4k-6=h+2 | | 2x-68+3x=72 | | 0.6x+1.2x+7=5.20 | | P=P+prt | | 2s^2-7=13s |

Equations solver categories