x^2+3=5x

Simple and best practice solution for x^2+3=5x 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+3=5x equation:


Simplifying
x2 + 3 = 5x

Reorder the terms:
3 + x2 = 5x

Solving
3 + x2 = 5x

Solving for variable 'x'.

Reorder the terms:
3 + -5x + x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
3 + -5x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -5x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + -5x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -5x + x2 = 0 + -3
-5x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
-5x + x2 = -3

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = -3 + 6.25

Reorder the terms:
6.25 + -5x + x2 = -3 + 6.25

Combine like terms: -3 + 6.25 = 3.25
6.25 + -5x + x2 = 3.25

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 3.25

Calculate the square root of the right side: 1.802775638

Break this problem into two subproblems by setting 
(x + -2.5) equal to 1.802775638 and -1.802775638.

Subproblem 1

x + -2.5 = 1.802775638 Simplifying x + -2.5 = 1.802775638 Reorder the terms: -2.5 + x = 1.802775638 Solving -2.5 + x = 1.802775638 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 1.802775638 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 1.802775638 + 2.5 x = 1.802775638 + 2.5 Combine like terms: 1.802775638 + 2.5 = 4.302775638 x = 4.302775638 Simplifying x = 4.302775638

Subproblem 2

x + -2.5 = -1.802775638 Simplifying x + -2.5 = -1.802775638 Reorder the terms: -2.5 + x = -1.802775638 Solving -2.5 + x = -1.802775638 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -1.802775638 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -1.802775638 + 2.5 x = -1.802775638 + 2.5 Combine like terms: -1.802775638 + 2.5 = 0.697224362 x = 0.697224362 Simplifying x = 0.697224362

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.302775638, 0.697224362}

See similar equations:

| 2.45+10.50x=308.00 | | d=35t-5t | | 3x-2(4-x)=x+1 | | 21x=18+18y | | 1/5(x+10)=-1 | | 4x+5-7x=-1 | | 121r^2-81t^2=0 | | 9x^2-x-4=0 | | 144c^2-49=0 | | 20x+15=-24 | | 2t^2-5t+25/4 | | 1/4(x+6) | | X^2+6x+4=o | | 7/20(x+4) | | 0.25x+99= | | 3h^2+12h-135=0 | | 1/3x+1=22 | | 1/x+1=22 | | 3x^2+12x+2xy+8y=0 | | 2x+30=3x-20 | | 0.1x+5=9.4 | | (3u+1/2)=(2u-9/2)+9 | | -3/2/3 | | 3X+1.5Y=214.5 | | A/7+2=18 | | 4x+30=x+20 | | 4(x+3)-3x+6=x+4 | | 0.25x+0.9=1.35 | | (-9.9)(4.43)= | | x+20=4x+30 | | 70/n=10 | | 4w+2/7=w+4/7-4 |

Equations solver categories