(x-7)*x=1100

Simple and best practice solution for (x-7)*x=1100 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=1100 equation:


Simplifying
(x + -7) * x = 1100

Reorder the terms:
(-7 + x) * x = 1100

Reorder the terms for easier multiplication:
x(-7 + x) = 1100
(-7 * x + x * x) = 1100
(-7x + x2) = 1100

Solving
-7x + x2 = 1100

Solving for variable 'x'.

Reorder the terms:
-1100 + -7x + x2 = 1100 + -1100

Combine like terms: 1100 + -1100 = 0
-1100 + -7x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '1100' to each side of the equation.
-1100 + -7x + 1100 + x2 = 0 + 1100

Reorder the terms:
-1100 + 1100 + -7x + x2 = 0 + 1100

Combine like terms: -1100 + 1100 = 0
0 + -7x + x2 = 0 + 1100
-7x + x2 = 0 + 1100

Combine like terms: 0 + 1100 = 1100
-7x + x2 = 1100

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 = 1100 + 12.25

Reorder the terms:
12.25 + -7x + x2 = 1100 + 12.25

Combine like terms: 1100 + 12.25 = 1112.25
12.25 + -7x + x2 = 1112.25

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = 1112.25

Calculate the square root of the right side: 33.350412291

Break this problem into two subproblems by setting 
(x + -3.5) equal to 33.350412291 and -33.350412291.

Subproblem 1

x + -3.5 = 33.350412291 Simplifying x + -3.5 = 33.350412291 Reorder the terms: -3.5 + x = 33.350412291 Solving -3.5 + x = 33.350412291 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 = 33.350412291 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 33.350412291 + 3.5 x = 33.350412291 + 3.5 Combine like terms: 33.350412291 + 3.5 = 36.850412291 x = 36.850412291 Simplifying x = 36.850412291

Subproblem 2

x + -3.5 = -33.350412291 Simplifying x + -3.5 = -33.350412291 Reorder the terms: -3.5 + x = -33.350412291 Solving -3.5 + x = -33.350412291 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 = -33.350412291 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -33.350412291 + 3.5 x = -33.350412291 + 3.5 Combine like terms: -33.350412291 + 3.5 = -29.850412291 x = -29.850412291 Simplifying x = -29.850412291

Solution

The solution to the problem is based on the solutions from the subproblems. x = {36.850412291, -29.850412291}

See similar equations:

| 8p+4=7p+8 | | 8-(3x-5)=9-4x | | 3*(4s^4)(16s^2t^4)(4t^2)= | | 3sinx+cosx=0 | | 4x^3/(2-x)^3 | | 10x-15=3x+8 | | -2(x+1)+3x+2=-8 | | z^2+7z=5 | | 9x^3-6x^2=3x | | -(x-12)+3(x+3)=9(x+4) | | 49.7=263-6u | | (9x+28)=(10x) | | 18(18)= | | (n)=1+(n-1)(-4.1) | | 17(z)=221 | | 5z+8z=-4z-3+2z | | 9/ln(x) | | (x-7)*x=750 | | 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 |

Equations solver categories