x^2-12x+28=3x+64

Simple and best practice solution for x^2-12x+28=3x+64 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^2-12x+28=3x+64 equation:


Simplifying
x2 + -12x + 28 = 3x + 64

Reorder the terms:
28 + -12x + x2 = 3x + 64

Reorder the terms:
28 + -12x + x2 = 64 + 3x

Solving
28 + -12x + x2 = 64 + 3x

Solving for variable 'x'.

Reorder the terms:
28 + -64 + -12x + -3x + x2 = 64 + 3x + -64 + -3x

Combine like terms: 28 + -64 = -36
-36 + -12x + -3x + x2 = 64 + 3x + -64 + -3x

Combine like terms: -12x + -3x = -15x
-36 + -15x + x2 = 64 + 3x + -64 + -3x

Reorder the terms:
-36 + -15x + x2 = 64 + -64 + 3x + -3x

Combine like terms: 64 + -64 = 0
-36 + -15x + x2 = 0 + 3x + -3x
-36 + -15x + x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-36 + -15x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '36' to each side of the equation.
-36 + -15x + 36 + x2 = 0 + 36

Reorder the terms:
-36 + 36 + -15x + x2 = 0 + 36

Combine like terms: -36 + 36 = 0
0 + -15x + x2 = 0 + 36
-15x + x2 = 0 + 36

Combine like terms: 0 + 36 = 36
-15x + x2 = 36

The x term is -15x.  Take half its coefficient (-7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
-15x + 56.25 + x2 = 36 + 56.25

Reorder the terms:
56.25 + -15x + x2 = 36 + 56.25

Combine like terms: 36 + 56.25 = 92.25
56.25 + -15x + x2 = 92.25

Factor a perfect square on the left side:
(x + -7.5)(x + -7.5) = 92.25

Calculate the square root of the right side: 9.604686356

Break this problem into two subproblems by setting 
(x + -7.5) equal to 9.604686356 and -9.604686356.

Subproblem 1

x + -7.5 = 9.604686356 Simplifying x + -7.5 = 9.604686356 Reorder the terms: -7.5 + x = 9.604686356 Solving -7.5 + x = 9.604686356 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + x = 9.604686356 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = 9.604686356 + 7.5 x = 9.604686356 + 7.5 Combine like terms: 9.604686356 + 7.5 = 17.104686356 x = 17.104686356 Simplifying x = 17.104686356

Subproblem 2

x + -7.5 = -9.604686356 Simplifying x + -7.5 = -9.604686356 Reorder the terms: -7.5 + x = -9.604686356 Solving -7.5 + x = -9.604686356 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + x = -9.604686356 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = -9.604686356 + 7.5 x = -9.604686356 + 7.5 Combine like terms: -9.604686356 + 7.5 = -2.104686356 x = -2.104686356 Simplifying x = -2.104686356

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.104686356, -2.104686356}

See similar equations:

| 2(5X-11)+12=0 | | 0.25=2.2xt+4.9xt^2 | | 3/13=v/12 | | 23(-22)= | | y=2.75x+5 | | -0.25=0xt+4.9xt^2 | | 5(x-2)=5x-2 | | f(x)=2x(8(x^2)-7) | | -5w-2=3w^2 | | 58-7x=2x+24 | | 6(3x-5)+18=18x-12 | | 10-10x=82-24x | | -32-7x=10x+18 | | 0.25=0xt+4.9xt^2 | | x^2-4xy+4y^2-5y-9=0 | | (25-v)(62)=(25+v)(38) | | (-21)+(-8)= | | (25-v)62/60=(25+v)38/60 | | 5x-7.2=3.1 | | 540=2(2x+60)+2x | | 4x-2x+3=2x+2z-x | | x+4+2=x+20 | | 2.3x-7=2.2 | | 3x-9+7x-3+3x-3=180 | | x^3-3x^2+2=0.1 | | 9/a-4-3/4-a | | 24+(32+x)=2(x+24) | | .17x+.07(60000-x)=6000 | | 7/y-8-6/8-y | | 100/3.05 | | .14x+.06(80000-x)=9000 | | .06(80000-52500)= |

Equations solver categories