8x^2+27x-63=0

Simple and best practice solution for 8x^2+27x-63=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 8x^2+27x-63=0 equation:


Simplifying
8x2 + 27x + -63 = 0

Reorder the terms:
-63 + 27x + 8x2 = 0

Solving
-63 + 27x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
-7.875 + 3.375x + x2 = 0

Move the constant term to the right:

Add '7.875' to each side of the equation.
-7.875 + 3.375x + 7.875 + x2 = 0 + 7.875

Reorder the terms:
-7.875 + 7.875 + 3.375x + x2 = 0 + 7.875

Combine like terms: -7.875 + 7.875 = 0.000
0.000 + 3.375x + x2 = 0 + 7.875
3.375x + x2 = 0 + 7.875

Combine like terms: 0 + 7.875 = 7.875
3.375x + x2 = 7.875

The x term is 3.375x.  Take half its coefficient (1.6875).
Square it (2.84765625) and add it to both sides.

Add '2.84765625' to each side of the equation.
3.375x + 2.84765625 + x2 = 7.875 + 2.84765625

Reorder the terms:
2.84765625 + 3.375x + x2 = 7.875 + 2.84765625

Combine like terms: 7.875 + 2.84765625 = 10.72265625
2.84765625 + 3.375x + x2 = 10.72265625

Factor a perfect square on the left side:
(x + 1.6875)(x + 1.6875) = 10.72265625

Calculate the square root of the right side: 3.274546724

Break this problem into two subproblems by setting 
(x + 1.6875) equal to 3.274546724 and -3.274546724.

Subproblem 1

x + 1.6875 = 3.274546724 Simplifying x + 1.6875 = 3.274546724 Reorder the terms: 1.6875 + x = 3.274546724 Solving 1.6875 + x = 3.274546724 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.6875' to each side of the equation. 1.6875 + -1.6875 + x = 3.274546724 + -1.6875 Combine like terms: 1.6875 + -1.6875 = 0.0000 0.0000 + x = 3.274546724 + -1.6875 x = 3.274546724 + -1.6875 Combine like terms: 3.274546724 + -1.6875 = 1.587046724 x = 1.587046724 Simplifying x = 1.587046724

Subproblem 2

x + 1.6875 = -3.274546724 Simplifying x + 1.6875 = -3.274546724 Reorder the terms: 1.6875 + x = -3.274546724 Solving 1.6875 + x = -3.274546724 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.6875' to each side of the equation. 1.6875 + -1.6875 + x = -3.274546724 + -1.6875 Combine like terms: 1.6875 + -1.6875 = 0.0000 0.0000 + x = -3.274546724 + -1.6875 x = -3.274546724 + -1.6875 Combine like terms: -3.274546724 + -1.6875 = -4.962046724 x = -4.962046724 Simplifying x = -4.962046724

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.587046724, -4.962046724}

See similar equations:

| 0=-16t^2-200 | | 3/p=9/7 | | 3k^2+30k=0 | | 9x^2-7x-9=0 | | e^2x-4+3=2 | | 6p+22=0 | | 5q+2=37 | | 4x^1/3=16 | | (26-6)=13n | | 2Y+24(24)=89 | | 16x^2+20x-200=0 | | 5/9u=20 | | 6z+18=5z+3 | | -9a=1 | | 6.3=(x*9.36)+(y*5.04) | | 6.3=(6.3-x*5.04)+(x*5.04) | | 6x+10=-95-9xs | | 56x-2=6+2x | | 4y+3=-2 | | m+5=-3 | | 3x(x^2+6x)= | | 19=5a+126b | | 2m+5=3m-7 | | 19=5a+12b | | x+4=2y-10 | | Cosx=.23 | | 4+x=5x-9-(2x-3) | | 0.6x+0.8=0.28x+1.16 | | 2x+21=16-3x | | (4x-3)-5=7 | | (x^4)-(2x^2)-1=0 | | (x+2)+(y-5)=8 |

Equations solver categories