(2x^2+3x+7)+(8x^2+3x-4)=

Simple and best practice solution for (2x^2+3x+7)+(8x^2+3x-4)= 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 (2x^2+3x+7)+(8x^2+3x-4)= equation: 


Simplifying
(2x2 + 3x + 7) + (8x2 + 3x + -4) = 0

Reorder the terms:
(7 + 3x + 2x2) + (8x2 + 3x + -4) = 0

Remove parenthesis around (7 + 3x + 2x2)
7 + 3x + 2x2 + (8x2 + 3x + -4) = 0

Reorder the terms:
7 + 3x + 2x2 + (-4 + 3x + 8x2) = 0

Remove parenthesis around (-4 + 3x + 8x2)
7 + 3x + 2x2 + -4 + 3x + 8x2 = 0

Reorder the terms:
7 + -4 + 3x + 3x + 2x2 + 8x2 = 0

Combine like terms: 7 + -4 = 3
3 + 3x + 3x + 2x2 + 8x2 = 0

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

Combine like terms: 2x2 + 8x2 = 10x2
3 + 6x + 10x2 = 0

Solving
3 + 6x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
0.3 + 0.6x + x2 = 0.0

Move the constant term to the right:

Add '-0.3' to each side of the equation.
0.3 + 0.6x + -0.3 + x2 = 0.0 + -0.3

Reorder the terms:
0.3 + -0.3 + 0.6x + x2 = 0.0 + -0.3

Combine like terms: 0.3 + -0.3 = 0.0
0.0 + 0.6x + x2 = 0.0 + -0.3
0.6x + x2 = 0.0 + -0.3

Combine like terms: 0.0 + -0.3 = -0.3
0.6x + x2 = -0.3

The x term is 0.6x.  Take half its coefficient (0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
0.6x + 0.09 + x2 = -0.3 + 0.09

Reorder the terms:
0.09 + 0.6x + x2 = -0.3 + 0.09

Combine like terms: -0.3 + 0.09 = -0.21
0.09 + 0.6x + x2 = -0.21

Factor a perfect square on the left side:
(x + 0.3)(x + 0.3) = -0.21

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| (x+1)2+(y-3)2=36 | | 2k-2.6=12 | | x^2y-xy-3y=0 | | 25a+25= | | Y=-3x-18 | | -14*y=5 | | G-0.26G-0.09G=876.72 | | 2y+3x-y=0 | | -14y=5 | | 4n=.24 | | y+14=5 | | x^2y-3x+5y=0 | | (5y-2x-4)-7= | | x-28=71 | | x^2+138x+536=0 | | 400(3x+2y)=1050 | | 4(w+3)=-6W-18 | | x^2+138x+500=0 | | 3d+4(6c+2)= | | 2(525-1.5y)+3y=1050 | | 3(x)-16=26 | | -2(a-7)=-28 | | 4(3x+5)-2= | | 3c-6c+7c= | | 8.8x^2+2.1x-9.2=0 | | 4a+5-8a= | | 105=x(x+8) | | x^2-2x-3=7 | | 2(3r-4)=6r-8 | | 7=9b | | -8n+24=8(3-7n) | | 0.05-0.15=0.25 |

Equations solver categories