2x^2+5x+7=3-6x

Simple and best practice solution for 2x^2+5x+7=3-6x 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+5x+7=3-6x equation:


Simplifying
2x2 + 5x + 7 = 3 + -6x

Reorder the terms:
7 + 5x + 2x2 = 3 + -6x

Solving
7 + 5x + 2x2 = 3 + -6x

Solving for variable 'x'.

Reorder the terms:
7 + -3 + 5x + 6x + 2x2 = 3 + -6x + -3 + 6x

Combine like terms: 7 + -3 = 4
4 + 5x + 6x + 2x2 = 3 + -6x + -3 + 6x

Combine like terms: 5x + 6x = 11x
4 + 11x + 2x2 = 3 + -6x + -3 + 6x

Reorder the terms:
4 + 11x + 2x2 = 3 + -3 + -6x + 6x

Combine like terms: 3 + -3 = 0
4 + 11x + 2x2 = 0 + -6x + 6x
4 + 11x + 2x2 = -6x + 6x

Combine like terms: -6x + 6x = 0
4 + 11x + 2x2 = 0

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

Divide each side by '2'.
2 + 5.5x + x2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + 5.5x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + 5.5x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 5.5x + x2 = 0 + -2
5.5x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
5.5x + x2 = -2

The x term is 5.5x.  Take half its coefficient (2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
5.5x + 7.5625 + x2 = -2 + 7.5625

Reorder the terms:
7.5625 + 5.5x + x2 = -2 + 7.5625

Combine like terms: -2 + 7.5625 = 5.5625
7.5625 + 5.5x + x2 = 5.5625

Factor a perfect square on the left side:
(x + 2.75)(x + 2.75) = 5.5625

Calculate the square root of the right side: 2.358495283

Break this problem into two subproblems by setting 
(x + 2.75) equal to 2.358495283 and -2.358495283.

Subproblem 1

x + 2.75 = 2.358495283 Simplifying x + 2.75 = 2.358495283 Reorder the terms: 2.75 + x = 2.358495283 Solving 2.75 + x = 2.358495283 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + x = 2.358495283 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = 2.358495283 + -2.75 x = 2.358495283 + -2.75 Combine like terms: 2.358495283 + -2.75 = -0.391504717 x = -0.391504717 Simplifying x = -0.391504717

Subproblem 2

x + 2.75 = -2.358495283 Simplifying x + 2.75 = -2.358495283 Reorder the terms: 2.75 + x = -2.358495283 Solving 2.75 + x = -2.358495283 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + x = -2.358495283 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = -2.358495283 + -2.75 x = -2.358495283 + -2.75 Combine like terms: -2.358495283 + -2.75 = -5.108495283 x = -5.108495283 Simplifying x = -5.108495283

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.391504717, -5.108495283}

See similar equations:

| 10x^2+128=96x | | -24=5r+3t | | -3(x+2)-2(x+3)=-7 | | 3sin^2x=since | | (4x+5)+(-7x-1)= | | 8y=12x-8 | | 3t^4+12t^3-15t^2=0 | | 3x-2(x+4)=5x-12 | | 35x^2=2x+1 | | log[3](x-5)=log[3](3x-25) | | x^4-3x^2-x+2=0 | | 16-8x=x^2 | | 18+4p=7+14d | | y-7=-3x+15 | | 6x-19=5-12x | | 7y-4+2y=3y-2 | | c-9(13+x)=0 | | V-18=16-3v | | 1=3secx | | ln(x)=-ln(3) | | 6x-4(x+1)=6-3x | | 6(y+3)=-2(y+31) | | -19+6x=5-12x | | 2x^2+3x=220 | | 12y^2+12y=144 | | 54=14-8a | | 4(x-6)+3=7 | | 2z^2+3z-7=0 | | 5p(-5)=105 | | Y=(x-2)2 | | x+x+9+x+x+9=301 | | 505p(-5)=1 |

Equations solver categories