1-4x^2=5x^2+12x

Simple and best practice solution for 1-4x^2=5x^2+12x 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 1-4x^2=5x^2+12x equation:


Simplifying
1 + -4x2 = 5x2 + 12x

Reorder the terms:
1 + -4x2 = 12x + 5x2

Solving
1 + -4x2 = 12x + 5x2

Solving for variable 'x'.

Reorder the terms:
1 + -12x + -4x2 + -5x2 = 12x + 5x2 + -12x + -5x2

Combine like terms: -4x2 + -5x2 = -9x2
1 + -12x + -9x2 = 12x + 5x2 + -12x + -5x2

Reorder the terms:
1 + -12x + -9x2 = 12x + -12x + 5x2 + -5x2

Combine like terms: 12x + -12x = 0
1 + -12x + -9x2 = 0 + 5x2 + -5x2
1 + -12x + -9x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
1 + -12x + -9x2 = 0

Begin completing the square.  Divide all terms by
-9 the coefficient of the squared term: 

Divide each side by '-9'.
-0.1111111111 + 1.333333333x + x2 = 0

Move the constant term to the right:

Add '0.1111111111' to each side of the equation.
-0.1111111111 + 1.333333333x + 0.1111111111 + x2 = 0 + 0.1111111111

Reorder the terms:
-0.1111111111 + 0.1111111111 + 1.333333333x + x2 = 0 + 0.1111111111

Combine like terms: -0.1111111111 + 0.1111111111 = 0.0000000000
0.0000000000 + 1.333333333x + x2 = 0 + 0.1111111111
1.333333333x + x2 = 0 + 0.1111111111

Combine like terms: 0 + 0.1111111111 = 0.1111111111
1.333333333x + x2 = 0.1111111111

The x term is 1.333333333x.  Take half its coefficient (0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
1.333333333x + 0.4444444442 + x2 = 0.1111111111 + 0.4444444442

Reorder the terms:
0.4444444442 + 1.333333333x + x2 = 0.1111111111 + 0.4444444442

Combine like terms: 0.1111111111 + 0.4444444442 = 0.5555555553
0.4444444442 + 1.333333333x + x2 = 0.5555555553

Factor a perfect square on the left side:
(x + 0.6666666665)(x + 0.6666666665) = 0.5555555553

Calculate the square root of the right side: 0.745355992

Break this problem into two subproblems by setting 
(x + 0.6666666665) equal to 0.745355992 and -0.745355992.

Subproblem 1

x + 0.6666666665 = 0.745355992 Simplifying x + 0.6666666665 = 0.745355992 Reorder the terms: 0.6666666665 + x = 0.745355992 Solving 0.6666666665 + x = 0.745355992 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x = 0.745355992 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x = 0.745355992 + -0.6666666665 x = 0.745355992 + -0.6666666665 Combine like terms: 0.745355992 + -0.6666666665 = 0.0786893255 x = 0.0786893255 Simplifying x = 0.0786893255

Subproblem 2

x + 0.6666666665 = -0.745355992 Simplifying x + 0.6666666665 = -0.745355992 Reorder the terms: 0.6666666665 + x = -0.745355992 Solving 0.6666666665 + x = -0.745355992 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x = -0.745355992 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x = -0.745355992 + -0.6666666665 x = -0.745355992 + -0.6666666665 Combine like terms: -0.745355992 + -0.6666666665 = -1.4120226585 x = -1.4120226585 Simplifying x = -1.4120226585

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.0786893255, -1.4120226585}

See similar equations:

| (10+x)+x=64 | | 8x-5y=17 | | 4x^2-25+25=-9x+10 | | 2x+8=4-16 | | 9(x+5)+4(x+5)=6x-6 | | 4-b=-123 | | y^2*(y^2+4)dx+2*x*y(y^2+4)dy=2dy | | -c+8=3c | | 16-7-7=-19 | | 5.4x+4.32=86.4 | | d=24-(3*x) | | 5(5x-2)=50x | | -2x+37=9x+81 | | x-10=(x^2-10x) | | 3x-97=10x-69 | | 8x^9-x^6=0 | | 6x+5x+7+3x+5=180 | | -126-7x=47-17x | | 3(5x-10)=0 | | x^3-11x^2+12=0 | | 8n-11=53 | | 8(x-2)=-3x+50 | | 7.5(x-1)=-0.5x+32.5 | | 8*x=41+18*x | | 2x-76=-x-97 | | (n+2)*9=27 | | -6x-71=-2x-43 | | 11x+8=12x-5 | | (n-3)*5=45 | | 12+3n=9n | | 2x-27=180 | | 200x+2=3999 |

Equations solver categories