(3x^2+2x+5)+(8x^2-8-8x)=

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


Simplifying
(3x2 + 2x + 5) + (8x2 + -8 + -8x) = 0

Reorder the terms:
(5 + 2x + 3x2) + (8x2 + -8 + -8x) = 0

Remove parenthesis around (5 + 2x + 3x2)
5 + 2x + 3x2 + (8x2 + -8 + -8x) = 0

Reorder the terms:
5 + 2x + 3x2 + (-8 + -8x + 8x2) = 0

Remove parenthesis around (-8 + -8x + 8x2)
5 + 2x + 3x2 + -8 + -8x + 8x2 = 0

Reorder the terms:
5 + -8 + 2x + -8x + 3x2 + 8x2 = 0

Combine like terms: 5 + -8 = -3
-3 + 2x + -8x + 3x2 + 8x2 = 0

Combine like terms: 2x + -8x = -6x
-3 + -6x + 3x2 + 8x2 = 0

Combine like terms: 3x2 + 8x2 = 11x2
-3 + -6x + 11x2 = 0

Solving
-3 + -6x + 11x2 = 0

Solving for variable 'x'.

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

Divide each side by '11'.
-0.2727272727 + -0.5454545455x + x2 = 0

Move the constant term to the right:

Add '0.2727272727' to each side of the equation.
-0.2727272727 + -0.5454545455x + 0.2727272727 + x2 = 0 + 0.2727272727

Reorder the terms:
-0.2727272727 + 0.2727272727 + -0.5454545455x + x2 = 0 + 0.2727272727

Combine like terms: -0.2727272727 + 0.2727272727 = 0.0000000000
0.0000000000 + -0.5454545455x + x2 = 0 + 0.2727272727
-0.5454545455x + x2 = 0 + 0.2727272727

Combine like terms: 0 + 0.2727272727 = 0.2727272727
-0.5454545455x + x2 = 0.2727272727

The x term is -0.5454545455x.  Take half its coefficient (-0.2727272728).
Square it (0.07438016533) and add it to both sides.

Add '0.07438016533' to each side of the equation.
-0.5454545455x + 0.07438016533 + x2 = 0.2727272727 + 0.07438016533

Reorder the terms:
0.07438016533 + -0.5454545455x + x2 = 0.2727272727 + 0.07438016533

Combine like terms: 0.2727272727 + 0.07438016533 = 0.34710743803
0.07438016533 + -0.5454545455x + x2 = 0.34710743803

Factor a perfect square on the left side:
(x + -0.2727272728)(x + -0.2727272728) = 0.34710743803

Calculate the square root of the right side: 0.589158245

Break this problem into two subproblems by setting 
(x + -0.2727272728) equal to 0.589158245 and -0.589158245.

Subproblem 1

x + -0.2727272728 = 0.589158245 Simplifying x + -0.2727272728 = 0.589158245 Reorder the terms: -0.2727272728 + x = 0.589158245 Solving -0.2727272728 + x = 0.589158245 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2727272728' to each side of the equation. -0.2727272728 + 0.2727272728 + x = 0.589158245 + 0.2727272728 Combine like terms: -0.2727272728 + 0.2727272728 = 0.0000000000 0.0000000000 + x = 0.589158245 + 0.2727272728 x = 0.589158245 + 0.2727272728 Combine like terms: 0.589158245 + 0.2727272728 = 0.8618855178 x = 0.8618855178 Simplifying x = 0.8618855178

Subproblem 2

x + -0.2727272728 = -0.589158245 Simplifying x + -0.2727272728 = -0.589158245 Reorder the terms: -0.2727272728 + x = -0.589158245 Solving -0.2727272728 + x = -0.589158245 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2727272728' to each side of the equation. -0.2727272728 + 0.2727272728 + x = -0.589158245 + 0.2727272728 Combine like terms: -0.2727272728 + 0.2727272728 = 0.0000000000 0.0000000000 + x = -0.589158245 + 0.2727272728 x = -0.589158245 + 0.2727272728 Combine like terms: -0.589158245 + 0.2727272728 = -0.3164309722 x = -0.3164309722 Simplifying x = -0.3164309722

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.8618855178, -0.3164309722}

See similar equations:

| 16uv^7x^3+12u^2x^7= | | Y=GX+S | | Y=GX | | 20.1276t^2-124.512t+124.06=0 | | -6(5-11)= | | 9X-(2X+17)=39 | | (12x)-(15y)=18 | | -4(x+1)=11 | | 40r^2-100r+250=0 | | 1.5c+17=.8c-32 | | -16t+1600=0 | | 4+3(3y-5)=(2y-11+y) | | (v+4)(v+6)= | | -6r-5=17-12r | | -4(x-1)=4 | | -18r=17-r | | lnx=7.25 | | 550000+15000p=666000+7000p | | c_10=7 | | -7(2x-4)=-42 | | s_8=8 | | -9+3y+5-7=6(y-12) | | 4r^2-10r+25=0 | | 4r^2+10r+25=0 | | 2(x-7)=24 | | f(x)x^2-3x-28= | | 19.6728t^2-156.792t+126.02=0 | | 55x^4-11x^3=0 | | 0.30x+.05(18-x)=.10(14) | | 46-5=36+9 | | x^2=-21x-90 | | 4x+(-9)=-5 |

Equations solver categories