(3x^2+2x+5)+(8x^2-5x-4)=0

Simple and best practice solution for (3x^2+2x+5)+(8x^2-5x-4)=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 (3x^2+2x+5)+(8x^2-5x-4)=0 equation:


Simplifying
(3x2 + 2x + 5) + (8x2 + -5x + -4) = 0

Reorder the terms:
(5 + 2x + 3x2) + (8x2 + -5x + -4) = 0

Remove parenthesis around (5 + 2x + 3x2)
5 + 2x + 3x2 + (8x2 + -5x + -4) = 0

Reorder the terms:
5 + 2x + 3x2 + (-4 + -5x + 8x2) = 0

Remove parenthesis around (-4 + -5x + 8x2)
5 + 2x + 3x2 + -4 + -5x + 8x2 = 0

Reorder the terms:
5 + -4 + 2x + -5x + 3x2 + 8x2 = 0

Combine like terms: 5 + -4 = 1
1 + 2x + -5x + 3x2 + 8x2 = 0

Combine like terms: 2x + -5x = -3x
1 + -3x + 3x2 + 8x2 = 0

Combine like terms: 3x2 + 8x2 = 11x2
1 + -3x + 11x2 = 0

Solving
1 + -3x + 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'.
0.09090909091 + -0.2727272727x + x2 = 0

Move the constant term to the right:

Add '-0.09090909091' to each side of the equation.
0.09090909091 + -0.2727272727x + -0.09090909091 + x2 = 0 + -0.09090909091

Reorder the terms:
0.09090909091 + -0.09090909091 + -0.2727272727x + x2 = 0 + -0.09090909091

Combine like terms: 0.09090909091 + -0.09090909091 = 0.00000000000
0.00000000000 + -0.2727272727x + x2 = 0 + -0.09090909091
-0.2727272727x + x2 = 0 + -0.09090909091

Combine like terms: 0 + -0.09090909091 = -0.09090909091
-0.2727272727x + x2 = -0.09090909091

The x term is -0.2727272727x.  Take half its coefficient (-0.1363636364).
Square it (0.01859504133) and add it to both sides.

Add '0.01859504133' to each side of the equation.
-0.2727272727x + 0.01859504133 + x2 = -0.09090909091 + 0.01859504133

Reorder the terms:
0.01859504133 + -0.2727272727x + x2 = -0.09090909091 + 0.01859504133

Combine like terms: -0.09090909091 + 0.01859504133 = -0.07231404958
0.01859504133 + -0.2727272727x + x2 = -0.07231404958

Factor a perfect square on the left side:
(x + -0.1363636364)(x + -0.1363636364) = -0.07231404958

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| (8x^2-7x)-(3x^2-7x)=0 | | -4(x+3)=4(-x-1) | | R+8=-12 | | 5c=3c+17 | | 6=-16x^2+24x+1 | | (5x-2)-(3x-8)=0 | | (x+3y)(x+y)=0 | | 7b^2-63b+140=0 | | (2x-3y)(3x+y)=0 | | (5m+2)(3m-4)=0 | | (a+4)(2a+1)=0 | | 5x^4-35x^3-90x^2=0 | | 3x+26=5x-4 | | (8a+3)(6a+1)=0 | | 3x+26=5x+2 | | (6x+5)(x-3)=0 | | 12x^3+50x^2+50x= | | 7x+14y=5x-15y | | 3x-(x+6)+1=15 | | 26.4074=3.14r^2 | | -5(e-10)=50 | | -3x+24y=-51 | | -14=-2(5-1x)+16 | | 8x^3-20x^2+12x-30=0 | | -5w+2(w+7)=20 | | -(2/3)=6/7x-(3/2) | | 10y^2-81=0 | | -2(8-X)=5(X+7) | | N^(6/5)=64 | | -18x+12x=3(4x-6) | | 3y+6y-12=24 | | (0.2x+1234-765)*0.1=246 |

Equations solver categories