(2x^2)-8x-143=0

Simple and best practice solution for (2x^2)-8x-143=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 (2x^2)-8x-143=0 equation:


Simplifying
(2x2) + -8x + -143 = 0

Reorder the terms:
-143 + -8x + (2x2) = 0

Solving
-143 + -8x + (2x2) = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-71.5 + -4x + x2 = 0

Move the constant term to the right:

Add '71.5' to each side of the equation.
-71.5 + -4x + 71.5 + x2 = 0 + 71.5

Reorder the terms:
-71.5 + 71.5 + -4x + x2 = 0 + 71.5

Combine like terms: -71.5 + 71.5 = 0.0
0.0 + -4x + x2 = 0 + 71.5
-4x + x2 = 0 + 71.5

Combine like terms: 0 + 71.5 = 71.5
-4x + x2 = 71.5

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 = 71.5 + 4

Reorder the terms:
4 + -4x + x2 = 71.5 + 4

Combine like terms: 71.5 + 4 = 75.5
4 + -4x + x2 = 75.5

Factor a perfect square on the left side:
((x) + -2)((x) + -2) = 75.5

Calculate the square root of the right side: 8.689073598

Break this problem into two subproblems by setting 
((x) + -2) equal to 8.689073598 and -8.689073598.

Subproblem 1

(x) + -2 = 8.689073598 Simplifying (x) + -2 = 8.689073598 x + -2 = 8.689073598 Reorder the terms: -2 + x = 8.689073598 Solving -2 + x = 8.689073598 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 = 8.689073598 + 2 Combine like terms: -2 + 2 = 0 0 + x = 8.689073598 + 2 x = 8.689073598 + 2 Combine like terms: 8.689073598 + 2 = 10.689073598 x = 10.689073598 Simplifying x = 10.689073598

Subproblem 2

(x) + -2 = -8.689073598 Simplifying (x) + -2 = -8.689073598 x + -2 = -8.689073598 Reorder the terms: -2 + x = -8.689073598 Solving -2 + x = -8.689073598 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 = -8.689073598 + 2 Combine like terms: -2 + 2 = 0 0 + x = -8.689073598 + 2 x = -8.689073598 + 2 Combine like terms: -8.689073598 + 2 = -6.689073598 x = -6.689073598 Simplifying x = -6.689073598

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.689073598, -6.689073598}

See similar equations:

| 21=6d+5d | | -63+(-36)= | | f(x)=2x^2-13x+9 | | -36+(-36)= | | 5-3(4z-4)=-5 | | 2(a-7)=5(a-4) | | 8m^2q-2mq+15q=0 | | 2t^2+6t-8=0 | | 0.1(p+17)=1 | | -97=-7x+6(4x-2) | | 7(4x-1)-28= | | 4.2t=-4(0.6t-1.2) | | 7x-11=-10+8x | | 5-3(z-2)=-6 | | -7x+3(3x+6)=-2 | | 4(9+2x)=-52 | | 600=125x+100 | | 6(8m+10n)+2m= | | 13.4w+17=5w+4 | | 5(2a-1)=3(a+6)-7 | | 6x+2(-5x-9)=2 | | 4x^8-20x^7+28x^6=0 | | Q+0.222=6.649 | | 9x+15x-5=6(4x+6) | | 75=7x-3(x-9) | | 9(8b-5)=-24 | | 4x-4(2x+3)=8 | | 0.5q-4=-2 | | -6x+10=6x+154 | | Y=8(1-0.15)t | | 4(x-3)+18=3(x+5) | | 5+x=3+17x |

Equations solver categories