8x^2+3x-5=36

Simple and best practice solution for 8x^2+3x-5=36 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+3x-5=36 equation:


Simplifying
8x2 + 3x + -5 = 36

Reorder the terms:
-5 + 3x + 8x2 = 36

Solving
-5 + 3x + 8x2 = 36

Solving for variable 'x'.

Reorder the terms:
-5 + -36 + 3x + 8x2 = 36 + -36

Combine like terms: -5 + -36 = -41
-41 + 3x + 8x2 = 36 + -36

Combine like terms: 36 + -36 = 0
-41 + 3x + 8x2 = 0

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

Divide each side by '8'.
-5.125 + 0.375x + x2 = 0

Move the constant term to the right:

Add '5.125' to each side of the equation.
-5.125 + 0.375x + 5.125 + x2 = 0 + 5.125

Reorder the terms:
-5.125 + 5.125 + 0.375x + x2 = 0 + 5.125

Combine like terms: -5.125 + 5.125 = 0.000
0.000 + 0.375x + x2 = 0 + 5.125
0.375x + x2 = 0 + 5.125

Combine like terms: 0 + 5.125 = 5.125
0.375x + x2 = 5.125

The x term is 0.375x.  Take half its coefficient (0.1875).
Square it (0.03515625) and add it to both sides.

Add '0.03515625' to each side of the equation.
0.375x + 0.03515625 + x2 = 5.125 + 0.03515625

Reorder the terms:
0.03515625 + 0.375x + x2 = 5.125 + 0.03515625

Combine like terms: 5.125 + 0.03515625 = 5.16015625
0.03515625 + 0.375x + x2 = 5.16015625

Factor a perfect square on the left side:
(x + 0.1875)(x + 0.1875) = 5.16015625

Calculate the square root of the right side: 2.271597731

Break this problem into two subproblems by setting 
(x + 0.1875) equal to 2.271597731 and -2.271597731.

Subproblem 1

x + 0.1875 = 2.271597731 Simplifying x + 0.1875 = 2.271597731 Reorder the terms: 0.1875 + x = 2.271597731 Solving 0.1875 + x = 2.271597731 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1875' to each side of the equation. 0.1875 + -0.1875 + x = 2.271597731 + -0.1875 Combine like terms: 0.1875 + -0.1875 = 0.0000 0.0000 + x = 2.271597731 + -0.1875 x = 2.271597731 + -0.1875 Combine like terms: 2.271597731 + -0.1875 = 2.084097731 x = 2.084097731 Simplifying x = 2.084097731

Subproblem 2

x + 0.1875 = -2.271597731 Simplifying x + 0.1875 = -2.271597731 Reorder the terms: 0.1875 + x = -2.271597731 Solving 0.1875 + x = -2.271597731 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1875' to each side of the equation. 0.1875 + -0.1875 + x = -2.271597731 + -0.1875 Combine like terms: 0.1875 + -0.1875 = 0.0000 0.0000 + x = -2.271597731 + -0.1875 x = -2.271597731 + -0.1875 Combine like terms: -2.271597731 + -0.1875 = -2.459097731 x = -2.459097731 Simplifying x = -2.459097731

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.084097731, -2.459097731}

See similar equations:

| Y=0.89x+40 | | -(2x+5)=13 | | 3-(2x-9)+x=-17x+11+16x | | -15=3(2+f) | | 4x+63-3x=90 | | x^2+16xy+y^2-7=0 | | 6m^2=90 | | 2x=11.5 | | 14k+55=11k+4 | | 2x^2-4xy+3y^3=-30 | | 24x^2-1x-3=0 | | 6y=5y+11 | | x^2+3x+42.25=19 | | 7(3+5y)+y=5 | | x+143+x+32=169 | | -1+3x+3=4x+2 | | X+4=2x-13 | | X+4=2x-14 | | X+4=2x-10 | | X+4=2x-11 | | 3x-3+3x-5=22 | | x-5(-1)=3 | | 8x+2+3x=90 | | 5m-28=9m-4 | | (3X+10)+(5X-52)=180 | | 9y+18+5x=90 | | 1.18p+4.86=19.02 | | 3x^2+45x=24x | | 8+-9y=-1 | | 2x^2+45=24x | | 5*n-27=103.59 | | 7*-7+6*-7=-19 |

Equations solver categories