(3x+1)(4x-3)=136

Simple and best practice solution for (3x+1)(4x-3)=136 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 (3x+1)(4x-3)=136 equation:


Simplifying
(3x + 1)(4x + -3) = 136

Reorder the terms:
(1 + 3x)(4x + -3) = 136

Reorder the terms:
(1 + 3x)(-3 + 4x) = 136

Multiply (1 + 3x) * (-3 + 4x)
(1(-3 + 4x) + 3x * (-3 + 4x)) = 136
((-3 * 1 + 4x * 1) + 3x * (-3 + 4x)) = 136
((-3 + 4x) + 3x * (-3 + 4x)) = 136
(-3 + 4x + (-3 * 3x + 4x * 3x)) = 136
(-3 + 4x + (-9x + 12x2)) = 136

Combine like terms: 4x + -9x = -5x
(-3 + -5x + 12x2) = 136

Solving
-3 + -5x + 12x2 = 136

Solving for variable 'x'.

Reorder the terms:
-3 + -136 + -5x + 12x2 = 136 + -136

Combine like terms: -3 + -136 = -139
-139 + -5x + 12x2 = 136 + -136

Combine like terms: 136 + -136 = 0
-139 + -5x + 12x2 = 0

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

Divide each side by '12'.
-11.58333333 + -0.4166666667x + x2 = 0

Move the constant term to the right:

Add '11.58333333' to each side of the equation.
-11.58333333 + -0.4166666667x + 11.58333333 + x2 = 0 + 11.58333333

Reorder the terms:
-11.58333333 + 11.58333333 + -0.4166666667x + x2 = 0 + 11.58333333

Combine like terms: -11.58333333 + 11.58333333 = 0.00000000
0.00000000 + -0.4166666667x + x2 = 0 + 11.58333333
-0.4166666667x + x2 = 0 + 11.58333333

Combine like terms: 0 + 11.58333333 = 11.58333333
-0.4166666667x + x2 = 11.58333333

The x term is -0.4166666667x.  Take half its coefficient (-0.2083333334).
Square it (0.04340277781) and add it to both sides.

Add '0.04340277781' to each side of the equation.
-0.4166666667x + 0.04340277781 + x2 = 11.58333333 + 0.04340277781

Reorder the terms:
0.04340277781 + -0.4166666667x + x2 = 11.58333333 + 0.04340277781

Combine like terms: 11.58333333 + 0.04340277781 = 11.62673610781
0.04340277781 + -0.4166666667x + x2 = 11.62673610781

Factor a perfect square on the left side:
(x + -0.2083333334)(x + -0.2083333334) = 11.62673610781

Calculate the square root of the right side: 3.40980001

Break this problem into two subproblems by setting 
(x + -0.2083333334) equal to 3.40980001 and -3.40980001.

Subproblem 1

x + -0.2083333334 = 3.40980001 Simplifying x + -0.2083333334 = 3.40980001 Reorder the terms: -0.2083333334 + x = 3.40980001 Solving -0.2083333334 + x = 3.40980001 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2083333334' to each side of the equation. -0.2083333334 + 0.2083333334 + x = 3.40980001 + 0.2083333334 Combine like terms: -0.2083333334 + 0.2083333334 = 0.0000000000 0.0000000000 + x = 3.40980001 + 0.2083333334 x = 3.40980001 + 0.2083333334 Combine like terms: 3.40980001 + 0.2083333334 = 3.6181333434 x = 3.6181333434 Simplifying x = 3.6181333434

Subproblem 2

x + -0.2083333334 = -3.40980001 Simplifying x + -0.2083333334 = -3.40980001 Reorder the terms: -0.2083333334 + x = -3.40980001 Solving -0.2083333334 + x = -3.40980001 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2083333334' to each side of the equation. -0.2083333334 + 0.2083333334 + x = -3.40980001 + 0.2083333334 Combine like terms: -0.2083333334 + 0.2083333334 = 0.0000000000 0.0000000000 + x = -3.40980001 + 0.2083333334 x = -3.40980001 + 0.2083333334 Combine like terms: -3.40980001 + 0.2083333334 = -3.2014666766 x = -3.2014666766 Simplifying x = -3.2014666766

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.6181333434, -3.2014666766}

See similar equations:

| 15x-7x= | | 10-1.5*4*x^3-2*6*x^5=0 | | 2x+18+x=180 | | 3x+15+4x-9=90 | | 3+12+3n=2+3n | | 4x+3x+4x=180 | | 9y+4=122 | | 2y+6x=30x+4 | | 11(6)-30+5(6)+6=8(6)+24 | | .5(8x-6)=3x-4+x | | 4x+3x+4x=189 | | -12=5x-2 | | 2y+(4(70+-.5y)-100)=180 | | 3r^2+7r-7=0 | | 8b-10=3(6-2b) | | -4(6x+7)=-24x-28 | | 1.63x-4.1=0 | | q+q^2-56= | | -13-7x=x+3 | | 3(2x+5)-7x=9 | | 7+3x-8-4=1+6x | | 5(14)+38=3(14) | | 78=2x(x+3) | | 8x+26+3x=180 | | p^2-6p-27= | | 9d-4d+5d+7-4d=0 | | 12+6x-15=3(x-2) | | -28-3v=v+7(-5v-4) | | r-10=-(10-r) | | 6y-4=5z+6b | | 0.2f+.6(f+20)=-8+.4f | | 4(4x+3)+17=19x+7-3x+22 |

Equations solver categories