x*x=4x-8

Simple and best practice solution for x*x=4x-8 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*x=4x-8 equation:


Simplifying
x * x = 4x + -8

Multiply x * x
x2 = 4x + -8

Reorder the terms:
x2 = -8 + 4x

Solving
x2 = -8 + 4x

Solving for variable 'x'.

Reorder the terms:
8 + -4x + x2 = -8 + 4x + 8 + -4x

Reorder the terms:
8 + -4x + x2 = -8 + 8 + 4x + -4x

Combine like terms: -8 + 8 = 0
8 + -4x + x2 = 0 + 4x + -4x
8 + -4x + x2 = 4x + -4x

Combine like terms: 4x + -4x = 0
8 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + -4x + -8 + x2 = 0 + -8

Reorder the terms:
8 + -8 + -4x + x2 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -4x + x2 = 0 + -8
-4x + x2 = 0 + -8

Combine like terms: 0 + -8 = -8
-4x + x2 = -8

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -8 + 4

Reorder the terms:
4 + -4x + x2 = -8 + 4

Combine like terms: -8 + 4 = -4
4 + -4x + x2 = -4

Factor a perfect square on the left side:
(x + -2)(x + -2) = -4

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3x-5=.5x | | x(3+4)=16 | | x(3+4)=9 | | 35-x^2=x^5 | | 18x+15=9x+33 | | -x^2+12x=-60 | | -4(v+1)=2(1-2v)-6 | | 3x+5=2(x+1)-3 | | 9b+7-2b=14 | | 5x=-20x+2 | | 6x^2-10x=3x-5 | | (4x-3)(2x+5)=x+96 | | 2x-7=-2x+1 | | 0.3x+.9-.6x+1.8=-0.3-0.9 | | 4(x-20)=16 | | -7(11+2y)-2y=13 | | (0.2a+1.3)(0.5a-0.1)= | | 10+x=y | | 3x+9=33 | | 3x^3-18x^2-2x+12=0 | | x^2+49y^2=49 | | X^2+29=0 | | 8x=12x-20 | | 7(v+4)=-4(2v-9)+9v | | 2x=18+2y | | 1250-113= | | x^2+36=7 | | (3x^3-18x^2)(-2x+12)=0 | | 2x-2=3x*6 | | X-2y=11 | | 3(v-1)=3v+3-2(-7v-5) | | -20+8b=3b |

Equations solver categories