7x+5x(x+3)+4x-x-2=

Simple and best practice solution for 7x+5x(x+3)+4x-x-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 7x+5x(x+3)+4x-x-2= equation:


Simplifying
7x + 5x(x + 3) + 4x + -1x + -2 = 0

Reorder the terms:
7x + 5x(3 + x) + 4x + -1x + -2 = 0
7x + (3 * 5x + x * 5x) + 4x + -1x + -2 = 0
7x + (15x + 5x2) + 4x + -1x + -2 = 0

Reorder the terms:
-2 + 7x + 15x + 4x + -1x + 5x2 = 0

Combine like terms: 7x + 15x = 22x
-2 + 22x + 4x + -1x + 5x2 = 0

Combine like terms: 22x + 4x = 26x
-2 + 26x + -1x + 5x2 = 0

Combine like terms: 26x + -1x = 25x
-2 + 25x + 5x2 = 0

Solving
-2 + 25x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-0.4 + 5x + x2 = 0

Move the constant term to the right:

Add '0.4' to each side of the equation.
-0.4 + 5x + 0.4 + x2 = 0 + 0.4

Reorder the terms:
-0.4 + 0.4 + 5x + x2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + 5x + x2 = 0 + 0.4
5x + x2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
5x + x2 = 0.4

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = 0.4 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 0.4 + 6.25

Combine like terms: 0.4 + 6.25 = 6.65
6.25 + 5x + x2 = 6.65

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 6.65

Calculate the square root of the right side: 2.578759392

Break this problem into two subproblems by setting 
(x + 2.5) equal to 2.578759392 and -2.578759392.

Subproblem 1

x + 2.5 = 2.578759392 Simplifying x + 2.5 = 2.578759392 Reorder the terms: 2.5 + x = 2.578759392 Solving 2.5 + x = 2.578759392 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 2.578759392 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 2.578759392 + -2.5 x = 2.578759392 + -2.5 Combine like terms: 2.578759392 + -2.5 = 0.078759392 x = 0.078759392 Simplifying x = 0.078759392

Subproblem 2

x + 2.5 = -2.578759392 Simplifying x + 2.5 = -2.578759392 Reorder the terms: 2.5 + x = -2.578759392 Solving 2.5 + x = -2.578759392 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -2.578759392 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -2.578759392 + -2.5 x = -2.578759392 + -2.5 Combine like terms: -2.578759392 + -2.5 = -5.078759392 x = -5.078759392 Simplifying x = -5.078759392

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.078759392, -5.078759392}

See similar equations:

| 7y-14=3y-26 | | 3a=7a-2 | | r-5=5 | | 3xyz-3xyz+zxy= | | (5x)2=32 | | 0.7r+1.9+0.1r=5.5-0.4 | | 15=9+(-3p) | | logy=10+2(logx) | | 10[(15-7)-(4*3)]= | | 5(3c-1)-6=11c+9 | | 15=9+(-3)p | | 12+6y+4=3y | | 22=x+4-7x | | -2v=52 | | 7-8c=4c-17 | | factor(x+2)(2x^4+4x^3-88x^2-36x-630)=0 | | 5x+10y=1000-100z | | -41=6c-13-4c | | f+397=482 | | u-4.43=5.8 | | p-3=p-4 | | 2.8m=14.4 | | 15k+88-8k= | | 2n+2n+2+2n+4=54 | | -5=22-5 | | -8=8n | | y+(-1)=2 | | -5-x=7+4x | | y+(-3)=2 | | g(-2)=-7 | | 6B+8=12 | | y+(-2)=2 |

Equations solver categories