x^2-3*x=22

Simple and best practice solution for x^2-3*x=22 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*x=22 equation:


Simplifying
x2 + -3x = 22

Reorder the terms:
-3x + x2 = 22

Solving
-3x + x2 = 22

Solving for variable 'x'.

Reorder the terms:
-22 + -3x + x2 = 22 + -22

Combine like terms: 22 + -22 = 0
-22 + -3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '22' to each side of the equation.
-22 + -3x + 22 + x2 = 0 + 22

Reorder the terms:
-22 + 22 + -3x + x2 = 0 + 22

Combine like terms: -22 + 22 = 0
0 + -3x + x2 = 0 + 22
-3x + x2 = 0 + 22

Combine like terms: 0 + 22 = 22
-3x + x2 = 22

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 22 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 22 + 2.25

Combine like terms: 22 + 2.25 = 24.25
2.25 + -3x + x2 = 24.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 24.25

Calculate the square root of the right side: 4.924428901

Break this problem into two subproblems by setting 
(x + -1.5) equal to 4.924428901 and -4.924428901.

Subproblem 1

x + -1.5 = 4.924428901 Simplifying x + -1.5 = 4.924428901 Reorder the terms: -1.5 + x = 4.924428901 Solving -1.5 + x = 4.924428901 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 4.924428901 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 4.924428901 + 1.5 x = 4.924428901 + 1.5 Combine like terms: 4.924428901 + 1.5 = 6.424428901 x = 6.424428901 Simplifying x = 6.424428901

Subproblem 2

x + -1.5 = -4.924428901 Simplifying x + -1.5 = -4.924428901 Reorder the terms: -1.5 + x = -4.924428901 Solving -1.5 + x = -4.924428901 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -4.924428901 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -4.924428901 + 1.5 x = -4.924428901 + 1.5 Combine like terms: -4.924428901 + 1.5 = -3.424428901 x = -3.424428901 Simplifying x = -3.424428901

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.424428901, -3.424428901}

See similar equations:

| x^2-3*tan(4*3x)=12 | | 5+3a+3=23 | | 0.8p=-112 | | x+9-2sqrtx+24=0 | | log(5x+7)=1+log(x-6) | | 7y=6(y+6) | | 3x-4x=65 | | 5(2+3x)-1=-6 | | (x+3y)(5x+3y)= | | (4y+2)(4-y)=0 | | 2z=1.8+0.8 | | 56=14y-7y | | (3y^2-5y+2)-(3y^6)=19 | | -0.4x=-12 | | 9n+6+5n-31=203 | | 5t^3+6t^2-10t-12=0 | | 3x-3=-3-3 | | 2-b=16 | | 3(5x+2)=3*5x+3*2 | | 1.5=3y+11.1 | | 45a+18ac=a | | 2(3x-12)=3(2x+10) | | 3n+3.1=8.2 | | 4(-2)squared+8(-2)squared+3(-2)squared+6= | | 4x+16=2(x+8) | | y=-2x-19 | | (6x+7)+(2x-3)=180 | | x+49=366 | | 35000.00+1680.00x=300.440 | | -6y^3+6y=6y^2-6 | | 64t+70t=603 | | 0=5x+35 |

Equations solver categories