3-x^2=10x

Simple and best practice solution for 3-x^2=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 3-x^2=10x equation:


Simplifying
3 + -1x2 = 10x

Solving
3 + -1x2 = 10x

Solving for variable 'x'.

Reorder the terms:
3 + -10x + -1x2 = 10x + -10x

Combine like terms: 10x + -10x = 0
3 + -10x + -1x2 = 0

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

Divide each side by '-1'.
-3 + 10x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 10x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + 10x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 10x + x2 = 0 + 3
10x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
10x + x2 = 3

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 = 3 + 25

Reorder the terms:
25 + 10x + x2 = 3 + 25

Combine like terms: 3 + 25 = 28
25 + 10x + x2 = 28

Factor a perfect square on the left side:
(x + 5)(x + 5) = 28

Calculate the square root of the right side: 5.291502622

Break this problem into two subproblems by setting 
(x + 5) equal to 5.291502622 and -5.291502622.

Subproblem 1

x + 5 = 5.291502622 Simplifying x + 5 = 5.291502622 Reorder the terms: 5 + x = 5.291502622 Solving 5 + x = 5.291502622 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 = 5.291502622 + -5 Combine like terms: 5 + -5 = 0 0 + x = 5.291502622 + -5 x = 5.291502622 + -5 Combine like terms: 5.291502622 + -5 = 0.291502622 x = 0.291502622 Simplifying x = 0.291502622

Subproblem 2

x + 5 = -5.291502622 Simplifying x + 5 = -5.291502622 Reorder the terms: 5 + x = -5.291502622 Solving 5 + x = -5.291502622 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 = -5.291502622 + -5 Combine like terms: 5 + -5 = 0 0 + x = -5.291502622 + -5 x = -5.291502622 + -5 Combine like terms: -5.291502622 + -5 = -10.291502622 x = -10.291502622 Simplifying x = -10.291502622

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.291502622, -10.291502622}

See similar equations:

| 15w-65=10 | | -.75n=-100 | | 5(x+5)+3=10x+5(x+3) | | w-16=14 | | 5(5-4)+2x=14 | | 0.7-4=0.9 | | 45=-5(7-8x) | | 3x^2-2y-3=0 | | 21-12n=12 | | 4036/3= | | 3x+2=20-3x | | 3/4t-1/2=3/4 | | 4b+3p=12 | | -13=x/10-12 | | 4J=400 | | 12z^5-8z^4/2z^2 | | -26=4+3(2-3k) | | 18-(5x+3)=-3x-9 | | 3/4t-1/2=1/2 | | -32m=-160 | | 2m-27=-31+m | | x^2+3x-4.5=0 | | 1.75x-0.83=0.625(x-0.67) | | -13/20=17t/20 | | 10x+13=373 | | -26=4+4(2-3k) | | 3+4a=5 | | 4ln(x+7)=2.5 | | -32-x=58 | | 3x+4(3x+9)=15x+36 | | Ln(x+5)=.02 | | 3(x+4)+3=9x+3(x+3) |

Equations solver categories