4x^2-18x+19=0

Simple and best practice solution for 4x^2-18x+19=0 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 4x^2-18x+19=0 equation:


Simplifying
4x2 + -18x + 19 = 0

Reorder the terms:
19 + -18x + 4x2 = 0

Solving
19 + -18x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
4.75 + -4.5x + x2 = 0

Move the constant term to the right:

Add '-4.75' to each side of the equation.
4.75 + -4.5x + -4.75 + x2 = 0 + -4.75

Reorder the terms:
4.75 + -4.75 + -4.5x + x2 = 0 + -4.75

Combine like terms: 4.75 + -4.75 = 0.00
0.00 + -4.5x + x2 = 0 + -4.75
-4.5x + x2 = 0 + -4.75

Combine like terms: 0 + -4.75 = -4.75
-4.5x + x2 = -4.75

The x term is -4.5x.  Take half its coefficient (-2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
-4.5x + 5.0625 + x2 = -4.75 + 5.0625

Reorder the terms:
5.0625 + -4.5x + x2 = -4.75 + 5.0625

Combine like terms: -4.75 + 5.0625 = 0.3125
5.0625 + -4.5x + x2 = 0.3125

Factor a perfect square on the left side:
(x + -2.25)(x + -2.25) = 0.3125

Calculate the square root of the right side: 0.559016994

Break this problem into two subproblems by setting 
(x + -2.25) equal to 0.559016994 and -0.559016994.

Subproblem 1

x + -2.25 = 0.559016994 Simplifying x + -2.25 = 0.559016994 Reorder the terms: -2.25 + x = 0.559016994 Solving -2.25 + x = 0.559016994 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 0.559016994 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 0.559016994 + 2.25 x = 0.559016994 + 2.25 Combine like terms: 0.559016994 + 2.25 = 2.809016994 x = 2.809016994 Simplifying x = 2.809016994

Subproblem 2

x + -2.25 = -0.559016994 Simplifying x + -2.25 = -0.559016994 Reorder the terms: -2.25 + x = -0.559016994 Solving -2.25 + x = -0.559016994 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -0.559016994 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -0.559016994 + 2.25 x = -0.559016994 + 2.25 Combine like terms: -0.559016994 + 2.25 = 1.690983006 x = 1.690983006 Simplifying x = 1.690983006

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.809016994, 1.690983006}

See similar equations:

| 1+5e+2e=78 | | 8x+2(x-4)=3(x+1)-2 | | -6(a-3)=24 | | 3x+5=3(x+3) | | 20=-16t(t-3) | | -3x-5(-x-4)=2 | | -5(y+2)=10 | | -1-7x+6x=-1 | | 4x+6y=103x+7y=12.5 | | 6(7x-1)=42x-6 | | 5(x+2)=-7x | | sqrt(-6y+37)=y-5 | | z=20x+6y | | 4y+9=z | | 3n-5=3n | | (3x^2-20x-7)=0 | | -3x-4x-6=-61 | | sin(x)=0.8191 | | 37=-7x+2(5x+2) | | 3log(4x)2=10 | | x^4+x^3+4x^2-24x-72=0factor | | x^4+x^3+4x^2-24x-72=0 | | factorx^4+x^3+4x^2-24x-72=0 | | 3(2x+5)+14=4(3x-7)-3 | | 7x=41 | | 6h-34=-6+h+14 | | -3w-4(-3x+3w)-6x= | | 4(-3)+9=-3 | | 2(x+4)+x=26 | | e^3x=e^7x-2 | | X^3=25.12 | | -54+97+(-10)+35= |

Equations solver categories