2x^2+10=-x^2+6x+9

Simple and best practice solution for 2x^2+10=-x^2+6x+9 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+10=-x^2+6x+9 equation:


Simplifying
2x2 + 10 = -1x2 + 6x + 9

Reorder the terms:
10 + 2x2 = -1x2 + 6x + 9

Reorder the terms:
10 + 2x2 = 9 + 6x + -1x2

Solving
10 + 2x2 = 9 + 6x + -1x2

Solving for variable 'x'.

Reorder the terms:
10 + -9 + -6x + 2x2 + x2 = 9 + 6x + -1x2 + -9 + -6x + x2

Combine like terms: 10 + -9 = 1
1 + -6x + 2x2 + x2 = 9 + 6x + -1x2 + -9 + -6x + x2

Combine like terms: 2x2 + x2 = 3x2
1 + -6x + 3x2 = 9 + 6x + -1x2 + -9 + -6x + x2

Reorder the terms:
1 + -6x + 3x2 = 9 + -9 + 6x + -6x + -1x2 + x2

Combine like terms: 9 + -9 = 0
1 + -6x + 3x2 = 0 + 6x + -6x + -1x2 + x2
1 + -6x + 3x2 = 6x + -6x + -1x2 + x2

Combine like terms: 6x + -6x = 0
1 + -6x + 3x2 = 0 + -1x2 + x2
1 + -6x + 3x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
1 + -6x + 3x2 = 0

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

Divide each side by '3'.
0.3333333333 + -2x + x2 = 0

Move the constant term to the right:

Add '-0.3333333333' to each side of the equation.
0.3333333333 + -2x + -0.3333333333 + x2 = 0 + -0.3333333333

Reorder the terms:
0.3333333333 + -0.3333333333 + -2x + x2 = 0 + -0.3333333333

Combine like terms: 0.3333333333 + -0.3333333333 = 0.0000000000
0.0000000000 + -2x + x2 = 0 + -0.3333333333
-2x + x2 = 0 + -0.3333333333

Combine like terms: 0 + -0.3333333333 = -0.3333333333
-2x + x2 = -0.3333333333

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -0.3333333333 + 1

Reorder the terms:
1 + -2x + x2 = -0.3333333333 + 1

Combine like terms: -0.3333333333 + 1 = 0.6666666667
1 + -2x + x2 = 0.6666666667

Factor a perfect square on the left side:
(x + -1)(x + -1) = 0.6666666667

Calculate the square root of the right side: 0.816496581

Break this problem into two subproblems by setting 
(x + -1) equal to 0.816496581 and -0.816496581.

Subproblem 1

x + -1 = 0.816496581 Simplifying x + -1 = 0.816496581 Reorder the terms: -1 + x = 0.816496581 Solving -1 + x = 0.816496581 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 0.816496581 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0.816496581 + 1 x = 0.816496581 + 1 Combine like terms: 0.816496581 + 1 = 1.816496581 x = 1.816496581 Simplifying x = 1.816496581

Subproblem 2

x + -1 = -0.816496581 Simplifying x + -1 = -0.816496581 Reorder the terms: -1 + x = -0.816496581 Solving -1 + x = -0.816496581 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -0.816496581 + 1 Combine like terms: -1 + 1 = 0 0 + x = -0.816496581 + 1 x = -0.816496581 + 1 Combine like terms: -0.816496581 + 1 = 0.183503419 x = 0.183503419 Simplifying x = 0.183503419

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.816496581, 0.183503419}

See similar equations:

| 4x^4+10x^2=0 | | 4x=7-(3x-35) | | x^2-4-95x=0 | | 7(-19+-4y)-y=-17 | | z^2-(2-i)z+7-i=0 | | (14-5)/(9-6) | | x^2+12x-64= | | 6(2x+5)=11x-6-8x | | 6x^2+23x=13 | | 15log(6-8)-18=42 | | -3w-35=-5(w+5) | | y=4x+2x^2-x^3 | | dHenri=t+48 | | -5(x+1)=4x-32 | | 4u-37=7(u-1) | | 2n+9=2n-9 | | x^2-2ax-2x=0 | | 6x+0=-4 | | f(-1)=6x-4 | | 28x=28.0 | | 100y^2-121=0 | | 2z-31=-9z-9z+24 | | -187=3x+5(2x-14) | | 5X-7(X+3)=2X+12 | | 20-x=22 | | 8/(x^1/2)=x | | (24+6)=-15 | | 8(15+4y)+2y=18 | | 6(6z+1)= | | 3k-4-k=k+16 | | -15r+5-11r+14r= | | 45=pi*r^2*h |

Equations solver categories