4x(x+3)-7=6x-6

Simple and best practice solution for 4x(x+3)-7=6x-6 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 4x(x+3)-7=6x-6 equation:


Simplifying
4x(x + 3) + -7 = 6x + -6

Reorder the terms:
4x(3 + x) + -7 = 6x + -6
(3 * 4x + x * 4x) + -7 = 6x + -6
(12x + 4x2) + -7 = 6x + -6

Reorder the terms:
-7 + 12x + 4x2 = 6x + -6

Reorder the terms:
-7 + 12x + 4x2 = -6 + 6x

Solving
-7 + 12x + 4x2 = -6 + 6x

Solving for variable 'x'.

Reorder the terms:
-7 + 6 + 12x + -6x + 4x2 = -6 + 6x + 6 + -6x

Combine like terms: -7 + 6 = -1
-1 + 12x + -6x + 4x2 = -6 + 6x + 6 + -6x

Combine like terms: 12x + -6x = 6x
-1 + 6x + 4x2 = -6 + 6x + 6 + -6x

Reorder the terms:
-1 + 6x + 4x2 = -6 + 6 + 6x + -6x

Combine like terms: -6 + 6 = 0
-1 + 6x + 4x2 = 0 + 6x + -6x
-1 + 6x + 4x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
-1 + 6x + 4x2 = 0

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

Divide each side by '4'.
-0.25 + 1.5x + x2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + 1.5x + 0.25 + x2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + 1.5x + x2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + 1.5x + x2 = 0 + 0.25
1.5x + x2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
1.5x + x2 = 0.25

The x term is 1.5x.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5x + 0.5625 + x2 = 0.25 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = 0.25 + 0.5625

Combine like terms: 0.25 + 0.5625 = 0.8125
0.5625 + 1.5x + x2 = 0.8125

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = 0.8125

Calculate the square root of the right side: 0.901387819

Break this problem into two subproblems by setting 
(x + 0.75) equal to 0.901387819 and -0.901387819.

Subproblem 1

x + 0.75 = 0.901387819 Simplifying x + 0.75 = 0.901387819 Reorder the terms: 0.75 + x = 0.901387819 Solving 0.75 + x = 0.901387819 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 0.901387819 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 0.901387819 + -0.75 x = 0.901387819 + -0.75 Combine like terms: 0.901387819 + -0.75 = 0.151387819 x = 0.151387819 Simplifying x = 0.151387819

Subproblem 2

x + 0.75 = -0.901387819 Simplifying x + 0.75 = -0.901387819 Reorder the terms: 0.75 + x = -0.901387819 Solving 0.75 + x = -0.901387819 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -0.901387819 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -0.901387819 + -0.75 x = -0.901387819 + -0.75 Combine like terms: -0.901387819 + -0.75 = -1.651387819 x = -1.651387819 Simplifying x = -1.651387819

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.151387819, -1.651387819}

See similar equations:

| 14+15=-5x-6(-3x+15)+5 | | (3x-2y)(4x^2-y+4x)= | | -3-10=-10 | | f=-2+-1.5t | | f=F-1+-1.5t-1F-1 | | x^2+7x-4=10+x^2 | | F(-2)f(t)=3+-2t | | Sin(x^2-4)=0 | | 112=5v+17 | | 19r+14+7r+3-17=0 | | f(x)=(6f-7)(8f-9) | | .5x+-.4y=0 | | 3x-12=13-2x | | 66-24z=-54 | | 8=10logx | | Y/3-9=14 | | Y/5-3=15 | | 10m-35=-15 | | 6x-12=15+45 | | 28x+30y+31z=365 | | 6x-12=15+35 | | k(k+2)2=0 | | 5y=12x+30 | | X+5-8=-3x+5 | | (.34*9280.48)+.5(0*9280)= | | 3*x=68 | | 29=y/2-15 | | a^2+7a-1=-a^2+14 | | 3b+10+x=6x+15b | | 29=y/12-15 | | M+8=-3 | | 282x3/?=47 |

Equations solver categories