19x-2x^2=12

Simple and best practice solution for 19x-2x^2=12 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-2x^2=12 equation:


Simplifying
19x + -2x2 = 12

Solving
19x + -2x2 = 12

Solving for variable 'x'.

Reorder the terms:
-12 + 19x + -2x2 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + 19x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
6 + -9.5x + x2 = 0

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + -9.5x + -6 + x2 = 0 + -6

Reorder the terms:
6 + -6 + -9.5x + x2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -9.5x + x2 = 0 + -6
-9.5x + x2 = 0 + -6

Combine like terms: 0 + -6 = -6
-9.5x + x2 = -6

The x term is -9.5x.  Take half its coefficient (-4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
-9.5x + 22.5625 + x2 = -6 + 22.5625

Reorder the terms:
22.5625 + -9.5x + x2 = -6 + 22.5625

Combine like terms: -6 + 22.5625 = 16.5625
22.5625 + -9.5x + x2 = 16.5625

Factor a perfect square on the left side:
(x + -4.75)(x + -4.75) = 16.5625

Calculate the square root of the right side: 4.069705149

Break this problem into two subproblems by setting 
(x + -4.75) equal to 4.069705149 and -4.069705149.

Subproblem 1

x + -4.75 = 4.069705149 Simplifying x + -4.75 = 4.069705149 Reorder the terms: -4.75 + x = 4.069705149 Solving -4.75 + x = 4.069705149 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + x = 4.069705149 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + x = 4.069705149 + 4.75 x = 4.069705149 + 4.75 Combine like terms: 4.069705149 + 4.75 = 8.819705149 x = 8.819705149 Simplifying x = 8.819705149

Subproblem 2

x + -4.75 = -4.069705149 Simplifying x + -4.75 = -4.069705149 Reorder the terms: -4.75 + x = -4.069705149 Solving -4.75 + x = -4.069705149 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + x = -4.069705149 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + x = -4.069705149 + 4.75 x = -4.069705149 + 4.75 Combine like terms: -4.069705149 + 4.75 = 0.680294851 x = 0.680294851 Simplifying x = 0.680294851

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.819705149, 0.680294851}

See similar equations:

| 3x-7*3-x=8 | | 4x^2-15x+14=-4x+8 | | 31b-(24b+95)= | | 4-3i= | | -4+10x+9=15+14x-18 | | 6-3(x-5)+x=5(x-7) | | 2x-56=21 | | 11.29=S-6.66 | | 0.2x+0.9=0.2-0.5x | | 4p+4q-4(9p-2q)= | | 1-.5x=0 | | 6(5-4x)=-4(5x+11) | | x^2-15n+44=9 | | x^4-9x^2+1=0 | | 1-(0.5)(-2)=0 | | -9-8x=2(7+4x) | | 1-3x=-5x+9 | | 13p=4p | | 2(2x+2)=66 | | -5v-4(-10-2v)= | | 1(-0.5X)=0 | | 2a+9b-7(3a-2b)= | | X-y-3z=-27 | | a(2y-7)= | | b+4b+5b= | | [1-9d]=17 | | 7x^2+20x+17=-x^2+55x+42 | | 2.5m+35=P | | (2+7i)i-(3+5i)= | | 4(y+2)=-4(4y-1)+2y | | 5(x-2)-3=42 | | 6x-8+2x=-6+9x |

Equations solver categories