5x^2-4x-64.01=0

Simple and best practice solution for 5x^2-4x-64.01=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 5x^2-4x-64.01=0 equation:


Simplifying
5x2 + -4x + -64.01 = 0

Reorder the terms:
-64.01 + -4x + 5x2 = 0

Solving
-64.01 + -4x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-12.802 + -0.8x + x2 = 0

Move the constant term to the right:

Add '12.802' to each side of the equation.
-12.802 + -0.8x + 12.802 + x2 = 0 + 12.802

Reorder the terms:
-12.802 + 12.802 + -0.8x + x2 = 0 + 12.802

Combine like terms: -12.802 + 12.802 = 0.000
0.000 + -0.8x + x2 = 0 + 12.802
-0.8x + x2 = 0 + 12.802

Combine like terms: 0 + 12.802 = 12.802
-0.8x + x2 = 12.802

The x term is -0.8x.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8x + 0.16 + x2 = 12.802 + 0.16

Reorder the terms:
0.16 + -0.8x + x2 = 12.802 + 0.16

Combine like terms: 12.802 + 0.16 = 12.962
0.16 + -0.8x + x2 = 12.962

Factor a perfect square on the left side:
(x + -0.4)(x + -0.4) = 12.962

Calculate the square root of the right side: 3.600277767

Break this problem into two subproblems by setting 
(x + -0.4) equal to 3.600277767 and -3.600277767.

Subproblem 1

x + -0.4 = 3.600277767 Simplifying x + -0.4 = 3.600277767 Reorder the terms: -0.4 + x = 3.600277767 Solving -0.4 + x = 3.600277767 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = 3.600277767 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = 3.600277767 + 0.4 x = 3.600277767 + 0.4 Combine like terms: 3.600277767 + 0.4 = 4.000277767 x = 4.000277767 Simplifying x = 4.000277767

Subproblem 2

x + -0.4 = -3.600277767 Simplifying x + -0.4 = -3.600277767 Reorder the terms: -0.4 + x = -3.600277767 Solving -0.4 + x = -3.600277767 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = -3.600277767 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = -3.600277767 + 0.4 x = -3.600277767 + 0.4 Combine like terms: -3.600277767 + 0.4 = -3.200277767 x = -3.200277767 Simplifying x = -3.200277767

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.000277767, -3.200277767}

See similar equations:

| 4x+6x=12x | | -2.66n+21=-0.33n | | mx^2+mx+2n=1+4x | | 3[3k]=30 | | Y=x^2+16x-36 | | 5(2x+3)+2(5x-1)=37 | | 7e+23=3e+(-7)+(-5) | | -42-9x+2x=49 | | .5(x+12)=4x-1 | | (0.5x-1)(4x+2)= | | 12x+26=4x+210 | | 5(x-2)=3(2x-4) | | 4a=1.44 | | 4e+6-2e-12=18 | | 2x(x)=48 | | 43x-4+1=2x-5+5x | | 20-x=330 | | -5+e+(-3)+11=4+21 | | (15)3/5= | | x-18y=19fory | | 4a+3=93 | | -26+x=-39+6x | | 2b-16=12 | | .75e^2x=.5 | | -5x=14(2x) | | X+3x+2x=x+3 | | Log(2x)+log(X)=7 | | 2(x-1)=3x-7-x | | 9(v+3)=6v+15 | | 150m-75m+52250=56375-200m | | 2e-e=3e+4 | | x^33-3=-3x^2+8x |

Equations solver categories