4x^2-11x+5=0

Simple and best practice solution for 4x^2-11x+5=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^2-11x+5=0 equation:


Simplifying
4x2 + -11x + 5 = 0

Reorder the terms:
5 + -11x + 4x2 = 0

Solving
5 + -11x + 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'.
1.25 + -2.75x + x2 = 0

Move the constant term to the right:

Add '-1.25' to each side of the equation.
1.25 + -2.75x + -1.25 + x2 = 0 + -1.25

Reorder the terms:
1.25 + -1.25 + -2.75x + x2 = 0 + -1.25

Combine like terms: 1.25 + -1.25 = 0.00
0.00 + -2.75x + x2 = 0 + -1.25
-2.75x + x2 = 0 + -1.25

Combine like terms: 0 + -1.25 = -1.25
-2.75x + x2 = -1.25

The x term is -2.75x.  Take half its coefficient (-1.375).
Square it (1.890625) and add it to both sides.

Add '1.890625' to each side of the equation.
-2.75x + 1.890625 + x2 = -1.25 + 1.890625

Reorder the terms:
1.890625 + -2.75x + x2 = -1.25 + 1.890625

Combine like terms: -1.25 + 1.890625 = 0.640625
1.890625 + -2.75x + x2 = 0.640625

Factor a perfect square on the left side:
(x + -1.375)(x + -1.375) = 0.640625

Calculate the square root of the right side: 0.80039053

Break this problem into two subproblems by setting 
(x + -1.375) equal to 0.80039053 and -0.80039053.

Subproblem 1

x + -1.375 = 0.80039053 Simplifying x + -1.375 = 0.80039053 Reorder the terms: -1.375 + x = 0.80039053 Solving -1.375 + x = 0.80039053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + x = 0.80039053 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + x = 0.80039053 + 1.375 x = 0.80039053 + 1.375 Combine like terms: 0.80039053 + 1.375 = 2.17539053 x = 2.17539053 Simplifying x = 2.17539053

Subproblem 2

x + -1.375 = -0.80039053 Simplifying x + -1.375 = -0.80039053 Reorder the terms: -1.375 + x = -0.80039053 Solving -1.375 + x = -0.80039053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + x = -0.80039053 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + x = -0.80039053 + 1.375 x = -0.80039053 + 1.375 Combine like terms: -0.80039053 + 1.375 = 0.57460947 x = 0.57460947 Simplifying x = 0.57460947

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.17539053, 0.57460947}

See similar equations:

| -18+12x+2x^2=0 | | (9+1x)=0 | | x^2+x=65 | | .5Q^2-12Q+8=0 | | x^2-2x=63 | | Q^2-6Q+5=0 | | 7n+7=77 | | 3n-14=13 | | 2(2-0.3x)=1.4 | | x+4=x | | -3x+2y=8 | | 2x+5=x+2 | | (5x-2)(11x-4)-3x^2(x-2)(4x+1)=0 | | (9x-1)(x+7)-4x(x+3)(7-3x)=0 | | 3-3x=0 | | 4(X+1)-2=5-X | | 3a+2(4a-1)=9 | | 5x+3x=0 | | 2x-3-x+3=0 | | 2x-2=8(11) | | 8xy+24y= | | w^2-10w-4=0 | | 2y=2x+8 | | 3y=x-6 | | y+4=x+1 | | y-1=2x+2 | | y-4.1=-5 | | e+0.81=-6.3 | | 7.9=i+12.7 | | h+0.48=1.2 | | 1.05=-7n | | 60t=54 |

Equations solver categories