8x^2+3.8x-10.35=0

Simple and best practice solution for 8x^2+3.8x-10.35=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+3.8x-10.35=0 equation:


Simplifying
8x2 + 3.8x + -10.35 = 0

Reorder the terms:
-10.35 + 3.8x + 8x2 = 0

Solving
-10.35 + 3.8x + 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'.
-1.29375 + 0.475x + x2 = 0

Move the constant term to the right:

Add '1.29375' to each side of the equation.
-1.29375 + 0.475x + 1.29375 + x2 = 0 + 1.29375

Reorder the terms:
-1.29375 + 1.29375 + 0.475x + x2 = 0 + 1.29375

Combine like terms: -1.29375 + 1.29375 = 0.00000
0.00000 + 0.475x + x2 = 0 + 1.29375
0.475x + x2 = 0 + 1.29375

Combine like terms: 0 + 1.29375 = 1.29375
0.475x + x2 = 1.29375

The x term is 0.475x.  Take half its coefficient (0.2375).
Square it (0.05640625) and add it to both sides.

Add '0.05640625' to each side of the equation.
0.475x + 0.05640625 + x2 = 1.29375 + 0.05640625

Reorder the terms:
0.05640625 + 0.475x + x2 = 1.29375 + 0.05640625

Combine like terms: 1.29375 + 0.05640625 = 1.35015625
0.05640625 + 0.475x + x2 = 1.35015625

Factor a perfect square on the left side:
(x + 0.2375)(x + 0.2375) = 1.35015625

Calculate the square root of the right side: 1.161962241

Break this problem into two subproblems by setting 
(x + 0.2375) equal to 1.161962241 and -1.161962241.

Subproblem 1

x + 0.2375 = 1.161962241 Simplifying x + 0.2375 = 1.161962241 Reorder the terms: 0.2375 + x = 1.161962241 Solving 0.2375 + x = 1.161962241 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2375' to each side of the equation. 0.2375 + -0.2375 + x = 1.161962241 + -0.2375 Combine like terms: 0.2375 + -0.2375 = 0.0000 0.0000 + x = 1.161962241 + -0.2375 x = 1.161962241 + -0.2375 Combine like terms: 1.161962241 + -0.2375 = 0.924462241 x = 0.924462241 Simplifying x = 0.924462241

Subproblem 2

x + 0.2375 = -1.161962241 Simplifying x + 0.2375 = -1.161962241 Reorder the terms: 0.2375 + x = -1.161962241 Solving 0.2375 + x = -1.161962241 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2375' to each side of the equation. 0.2375 + -0.2375 + x = -1.161962241 + -0.2375 Combine like terms: 0.2375 + -0.2375 = 0.0000 0.0000 + x = -1.161962241 + -0.2375 x = -1.161962241 + -0.2375 Combine like terms: -1.161962241 + -0.2375 = -1.399462241 x = -1.399462241 Simplifying x = -1.399462241

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.924462241, -1.399462241}

See similar equations:

| A+3.2=6.5 | | X^2+2xy-8y^2=7 | | 5x-10+5x=360 | | 3(1-7n)-8n=-200 | | 4(w-5)-2=-4(7w+3)-9w | | 7.8x-2.8y-7.6=0 | | a^3-a-5b=8 | | 7w-4w=27 | | -9(y-9)=9y+27 | | 2u-46=-6(u-3) | | (2/3)/0 | | 1/2h=-14 | | 0=1E+10x-5E+10 | | y=1E+10x-5E+10 | | 3(2(3/2)-5)-(3/2) | | 9(2x-9.5)=-16.5+8.5 | | 15(t+2)+9t=16 | | 4xy-28x+5y-35=0 | | 2x+5y=3000 | | x^2-8x+105=0 | | 1.3y-1.4=-0.5 | | 2x-3=x^2/3 | | 1.3y-1.4=0.5 | | -x^3+17x^2+78x-654=0 | | -8(x-3)=x+3 | | (240+x)(375+x)=171000 | | -5x-3=x-1 | | 217=144-v | | 20+x=6x-24 | | x*.5X=96 | | x*.5X= | | -40t+120=55t |

Equations solver categories