-x+7x+9+x^2=7+4x^2

Simple and best practice solution for -x+7x+9+x^2=7+4x^2 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 -x+7x+9+x^2=7+4x^2 equation:


Simplifying
-1x + 7x + 9 + x2 = 7 + 4x2

Reorder the terms:
9 + -1x + 7x + x2 = 7 + 4x2

Combine like terms: -1x + 7x = 6x
9 + 6x + x2 = 7 + 4x2

Solving
9 + 6x + x2 = 7 + 4x2

Solving for variable 'x'.

Reorder the terms:
9 + -7 + 6x + x2 + -4x2 = 7 + 4x2 + -7 + -4x2

Combine like terms: 9 + -7 = 2
2 + 6x + x2 + -4x2 = 7 + 4x2 + -7 + -4x2

Combine like terms: x2 + -4x2 = -3x2
2 + 6x + -3x2 = 7 + 4x2 + -7 + -4x2

Reorder the terms:
2 + 6x + -3x2 = 7 + -7 + 4x2 + -4x2

Combine like terms: 7 + -7 = 0
2 + 6x + -3x2 = 0 + 4x2 + -4x2
2 + 6x + -3x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
2 + 6x + -3x2 = 0

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

Divide each side by '-3'.
-0.6666666667 + -2x + x2 = 0

Move the constant term to the right:

Add '0.6666666667' to each side of the equation.
-0.6666666667 + -2x + 0.6666666667 + x2 = 0 + 0.6666666667

Reorder the terms:
-0.6666666667 + 0.6666666667 + -2x + x2 = 0 + 0.6666666667

Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000
0.0000000000 + -2x + x2 = 0 + 0.6666666667
-2x + x2 = 0 + 0.6666666667

Combine like terms: 0 + 0.6666666667 = 0.6666666667
-2x + x2 = 0.6666666667

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 = 0.6666666667 + 1

Reorder the terms:
1 + -2x + x2 = 0.6666666667 + 1

Combine like terms: 0.6666666667 + 1 = 1.6666666667
1 + -2x + x2 = 1.6666666667

Factor a perfect square on the left side:
(x + -1)(x + -1) = 1.6666666667

Calculate the square root of the right side: 1.290994449

Break this problem into two subproblems by setting 
(x + -1) equal to 1.290994449 and -1.290994449.

Subproblem 1

x + -1 = 1.290994449 Simplifying x + -1 = 1.290994449 Reorder the terms: -1 + x = 1.290994449 Solving -1 + x = 1.290994449 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 = 1.290994449 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.290994449 + 1 x = 1.290994449 + 1 Combine like terms: 1.290994449 + 1 = 2.290994449 x = 2.290994449 Simplifying x = 2.290994449

Subproblem 2

x + -1 = -1.290994449 Simplifying x + -1 = -1.290994449 Reorder the terms: -1 + x = -1.290994449 Solving -1 + x = -1.290994449 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 = -1.290994449 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.290994449 + 1 x = -1.290994449 + 1 Combine like terms: -1.290994449 + 1 = -0.290994449 x = -0.290994449 Simplifying x = -0.290994449

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.290994449, -0.290994449}

See similar equations:

| y-26=22 | | 5(2x-1)-1=8x+4 | | 6a-8=10 | | 4x*2-69x-54=0 | | 6x+1=19+x | | 3=-5+2n | | 196+36=c^2 | | 12q-15=6q+9 | | 900+324=c^2 | | 10.33-1.7y=7.67+2.1y | | 8(x-3)=-2(5-x) | | 5=1+4(x-6) | | 324+64=c^2 | | 3x+16=x | | 3(47-8)=12 | | 100-a^2=225 | | 3(a+2)=2(a-2) | | 2h^2-7h+6=0 | | 25+144=c^2 | | 3x-3/10=2x+2/8 | | -13x-20=-11x+120 | | .5(x+6)=12 | | 4m+3d+-5m+d= | | 81+144=c^2 | | 4m+3d+-5m= | | 3x-8=4x+8 | | -4(x+5)=2(x-11) | | 14d+-6=17d | | 2a^2-4a-9=0 | | -8=.8(-10) | | x-(x*.10)=100000 | | 24(8)=2 |

Equations solver categories