x^2-8x-143=0

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


Simplifying
x2 + -8x + -143 = 0

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

Solving
-143 + -8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '143' to each side of the equation.
-143 + -8x + 143 + x2 = 0 + 143

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

Combine like terms: -143 + 143 = 0
0 + -8x + x2 = 0 + 143
-8x + x2 = 0 + 143

Combine like terms: 0 + 143 = 143
-8x + x2 = 143

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 143 + 16

Reorder the terms:
16 + -8x + x2 = 143 + 16

Combine like terms: 143 + 16 = 159
16 + -8x + x2 = 159

Factor a perfect square on the left side:
(x + -4)(x + -4) = 159

Calculate the square root of the right side: 12.609520213

Break this problem into two subproblems by setting 
(x + -4) equal to 12.609520213 and -12.609520213.

Subproblem 1

x + -4 = 12.609520213 Simplifying x + -4 = 12.609520213 Reorder the terms: -4 + x = 12.609520213 Solving -4 + x = 12.609520213 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 12.609520213 + 4 Combine like terms: -4 + 4 = 0 0 + x = 12.609520213 + 4 x = 12.609520213 + 4 Combine like terms: 12.609520213 + 4 = 16.609520213 x = 16.609520213 Simplifying x = 16.609520213

Subproblem 2

x + -4 = -12.609520213 Simplifying x + -4 = -12.609520213 Reorder the terms: -4 + x = -12.609520213 Solving -4 + x = -12.609520213 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -12.609520213 + 4 Combine like terms: -4 + 4 = 0 0 + x = -12.609520213 + 4 x = -12.609520213 + 4 Combine like terms: -12.609520213 + 4 = -8.609520213 x = -8.609520213 Simplifying x = -8.609520213

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.609520213, -8.609520213}

See similar equations:

| =-15g-1g^2 | | (-24/7)(19/4) | | 7(v+7)+10=5v-1 | | 3x+7y-13=0 | | 4ln(2.3x)=18 | | .15x+2x*15+.3=0.35x-0.4 | | F(x)=-(x+2)(x-3) | | 500+40x=200+60x | | -9u-15=-2(u-3) | | 3x+18=6x+14 | | 7a-5b=18 | | 6(t+1)+7=10t-7 | | 10t+6t-14t=16 | | (4y+4)-(8y-9)= | | G(x)=x^2-5x-24 | | -11/12(-3/4) | | -8v+4(v-5)=-28 | | 3h/2=3.14 | | 2x+5=122 | | -3/4(8) | | 7.3t+22=2.1t(x+5) | | 49x^2+-88x+16=0 | | 5u-3u-u+3=14 | | 121x^2+-88x+16=0 | | C^2+8x=-32 | | 2/3÷1/2 | | 2x+5x+7x=59.8 | | -9=2(w-2)-7w | | 0.66667x-5=0.5x-3 | | 3+1.5x+7=-90-x | | 2x+5+y=122 | | -32+5x= |

Equations solver categories