(x-7)*x=750

Simple and best practice solution for (x-7)*x=750 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-7)*x=750 equation:


Simplifying
(x + -7) * x = 750

Reorder the terms:
(-7 + x) * x = 750

Reorder the terms for easier multiplication:
x(-7 + x) = 750
(-7 * x + x * x) = 750
(-7x + x2) = 750

Solving
-7x + x2 = 750

Solving for variable 'x'.

Reorder the terms:
-750 + -7x + x2 = 750 + -750

Combine like terms: 750 + -750 = 0
-750 + -7x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '750' to each side of the equation.
-750 + -7x + 750 + x2 = 0 + 750

Reorder the terms:
-750 + 750 + -7x + x2 = 0 + 750

Combine like terms: -750 + 750 = 0
0 + -7x + x2 = 0 + 750
-7x + x2 = 0 + 750

Combine like terms: 0 + 750 = 750
-7x + x2 = 750

The x term is -7x.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7x + 12.25 + x2 = 750 + 12.25

Reorder the terms:
12.25 + -7x + x2 = 750 + 12.25

Combine like terms: 750 + 12.25 = 762.25
12.25 + -7x + x2 = 762.25

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = 762.25

Calculate the square root of the right side: 27.608875385

Break this problem into two subproblems by setting 
(x + -3.5) equal to 27.608875385 and -27.608875385.

Subproblem 1

x + -3.5 = 27.608875385 Simplifying x + -3.5 = 27.608875385 Reorder the terms: -3.5 + x = 27.608875385 Solving -3.5 + x = 27.608875385 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = 27.608875385 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 27.608875385 + 3.5 x = 27.608875385 + 3.5 Combine like terms: 27.608875385 + 3.5 = 31.108875385 x = 31.108875385 Simplifying x = 31.108875385

Subproblem 2

x + -3.5 = -27.608875385 Simplifying x + -3.5 = -27.608875385 Reorder the terms: -3.5 + x = -27.608875385 Solving -3.5 + x = -27.608875385 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = -27.608875385 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -27.608875385 + 3.5 x = -27.608875385 + 3.5 Combine like terms: -27.608875385 + 3.5 = -24.108875385 x = -24.108875385 Simplifying x = -24.108875385

Solution

The solution to the problem is based on the solutions from the subproblems. x = {31.108875385, -24.108875385}

See similar equations:

| 175.52=302-6t | | -2(x+1)+2x+2=-8 | | 8(c-3)=7(c-3) | | 4*(27s^6t^3)(6st)= | | 36x^2-144=0 | | 60x+65(x-1)=240 | | -12-3x+8x=4x-7 | | 3t-(-26)=8+(-6)t | | 9x=792 | | 2x-8=9x+9 | | -8-6x+4x=-10 | | 14=41-12y | | (4s^2)*(16s^3t^6)= | | 2x-7y=34 | | 9x-3=x+4 | | 3x/56=x/14 | | Y=2x^3-5x^2 | | 6(x-4)-(2x+2)=4(5x+2) | | 3x=225 | | 6(1x+5)=84 | | 3(-4x-3)+2x-1=40 | | 6b^2=-6b | | 5m+11=8m+7+m | | 4x-5=28x+1 | | 13/15(x-4y-5z) | | 4x+36=180 | | (x-32)*x=8025 | | -2(1-8n)+3=-111 | | (-2p^3-5p+7)+(-4p^2+8p+2)= | | 5+u=13 | | 2/3y-1/5=-2 | | 24x+51= |

Equations solver categories