-19x^2+76x=-4

Simple and best practice solution for -19x^2+76x=-4 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 -19x^2+76x=-4 equation:


Simplifying
-19x2 + 76x = -4

Reorder the terms:
76x + -19x2 = -4

Solving
76x + -19x2 = -4

Solving for variable 'x'.

Reorder the terms:
4 + 76x + -19x2 = -4 + 4

Combine like terms: -4 + 4 = 0
4 + 76x + -19x2 = 0

Begin completing the square.  Divide all terms by
-19 the coefficient of the squared term: 

Divide each side by '-19'.
-0.2105263158 + -4x + x2 = 0

Move the constant term to the right:

Add '0.2105263158' to each side of the equation.
-0.2105263158 + -4x + 0.2105263158 + x2 = 0 + 0.2105263158

Reorder the terms:
-0.2105263158 + 0.2105263158 + -4x + x2 = 0 + 0.2105263158

Combine like terms: -0.2105263158 + 0.2105263158 = 0.0000000000
0.0000000000 + -4x + x2 = 0 + 0.2105263158
-4x + x2 = 0 + 0.2105263158

Combine like terms: 0 + 0.2105263158 = 0.2105263158
-4x + x2 = 0.2105263158

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 = 0.2105263158 + 4

Reorder the terms:
4 + -4x + x2 = 0.2105263158 + 4

Combine like terms: 0.2105263158 + 4 = 4.2105263158
4 + -4x + x2 = 4.2105263158

Factor a perfect square on the left side:
(x + -2)(x + -2) = 4.2105263158

Calculate the square root of the right side: 2.051956704

Break this problem into two subproblems by setting 
(x + -2) equal to 2.051956704 and -2.051956704.

Subproblem 1

x + -2 = 2.051956704 Simplifying x + -2 = 2.051956704 Reorder the terms: -2 + x = 2.051956704 Solving -2 + x = 2.051956704 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 2.051956704 + 2 Combine like terms: -2 + 2 = 0 0 + x = 2.051956704 + 2 x = 2.051956704 + 2 Combine like terms: 2.051956704 + 2 = 4.051956704 x = 4.051956704 Simplifying x = 4.051956704

Subproblem 2

x + -2 = -2.051956704 Simplifying x + -2 = -2.051956704 Reorder the terms: -2 + x = -2.051956704 Solving -2 + x = -2.051956704 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -2.051956704 + 2 Combine like terms: -2 + 2 = 0 0 + x = -2.051956704 + 2 x = -2.051956704 + 2 Combine like terms: -2.051956704 + 2 = -0.051956704 x = -0.051956704 Simplifying x = -0.051956704

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.051956704, -0.051956704}

See similar equations:

| 36x^2-65m-36=0 | | 5x+2-3x=x+7 | | 2x^2-51x+94=0 | | X^(1/3)=2/5 | | x^2-44x+41=0 | | -2(3x-8)+11=45 | | 114=7x+4(2x-9) | | 2x-7=103 | | -74g-16g-13g-79g-42g-63=-89 | | 7(x-5)+7x=65 | | p=r-s-2 | | 9=24+3x | | 3c-2c-1=24 | | 8(1+n)=15+n | | 2r-r-1=12 | | 31x-13x-13x-3x=42 | | -19x^2+76x+4=0 | | 9(x-8)+7x=8 | | 31w-26w-3w=22 | | 3x+5(x-16)=-8 | | 31r-36r=30 | | x^5-13x^4+36x^3=0 | | -5n+6n=8-8n-n | | 3(x-1)+6=12 | | x^2/(.1-x) | | 6d+19d+5d+-2d-11d=-17 | | 14=-0.5(8x+12) | | 12m+50=949.50 | | -5n+6=8-8n-8 | | 2r-r-r+2r+4r-5=13 | | x-x-4y=10 | | 4x+2(3x+14)=148 |

Equations solver categories