(2b-3)(3b-8)=8

Simple and best practice solution for (2b-3)(3b-8)=8 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 (2b-3)(3b-8)=8 equation:


Simplifying
(2b + -3)(3b + -8) = 8

Reorder the terms:
(-3 + 2b)(3b + -8) = 8

Reorder the terms:
(-3 + 2b)(-8 + 3b) = 8

Multiply (-3 + 2b) * (-8 + 3b)
(-3(-8 + 3b) + 2b * (-8 + 3b)) = 8
((-8 * -3 + 3b * -3) + 2b * (-8 + 3b)) = 8
((24 + -9b) + 2b * (-8 + 3b)) = 8
(24 + -9b + (-8 * 2b + 3b * 2b)) = 8
(24 + -9b + (-16b + 6b2)) = 8

Combine like terms: -9b + -16b = -25b
(24 + -25b + 6b2) = 8

Solving
24 + -25b + 6b2 = 8

Solving for variable 'b'.

Reorder the terms:
24 + -8 + -25b + 6b2 = 8 + -8

Combine like terms: 24 + -8 = 16
16 + -25b + 6b2 = 8 + -8

Combine like terms: 8 + -8 = 0
16 + -25b + 6b2 = 0

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

Divide each side by '6'.
2.666666667 + -4.166666667b + b2 = 0

Move the constant term to the right:

Add '-2.666666667' to each side of the equation.
2.666666667 + -4.166666667b + -2.666666667 + b2 = 0 + -2.666666667

Reorder the terms:
2.666666667 + -2.666666667 + -4.166666667b + b2 = 0 + -2.666666667

Combine like terms: 2.666666667 + -2.666666667 = 0.000000000
0.000000000 + -4.166666667b + b2 = 0 + -2.666666667
-4.166666667b + b2 = 0 + -2.666666667

Combine like terms: 0 + -2.666666667 = -2.666666667
-4.166666667b + b2 = -2.666666667

The b term is -4.166666667b.  Take half its coefficient (-2.083333334).
Square it (4.340277781) and add it to both sides.

Add '4.340277781' to each side of the equation.
-4.166666667b + 4.340277781 + b2 = -2.666666667 + 4.340277781

Reorder the terms:
4.340277781 + -4.166666667b + b2 = -2.666666667 + 4.340277781

Combine like terms: -2.666666667 + 4.340277781 = 1.673611114
4.340277781 + -4.166666667b + b2 = 1.673611114

Factor a perfect square on the left side:
(b + -2.083333334)(b + -2.083333334) = 1.673611114

Calculate the square root of the right side: 1.293681226

Break this problem into two subproblems by setting 
(b + -2.083333334) equal to 1.293681226 and -1.293681226.

Subproblem 1

b + -2.083333334 = 1.293681226 Simplifying b + -2.083333334 = 1.293681226 Reorder the terms: -2.083333334 + b = 1.293681226 Solving -2.083333334 + b = 1.293681226 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '2.083333334' to each side of the equation. -2.083333334 + 2.083333334 + b = 1.293681226 + 2.083333334 Combine like terms: -2.083333334 + 2.083333334 = 0.000000000 0.000000000 + b = 1.293681226 + 2.083333334 b = 1.293681226 + 2.083333334 Combine like terms: 1.293681226 + 2.083333334 = 3.37701456 b = 3.37701456 Simplifying b = 3.37701456

Subproblem 2

b + -2.083333334 = -1.293681226 Simplifying b + -2.083333334 = -1.293681226 Reorder the terms: -2.083333334 + b = -1.293681226 Solving -2.083333334 + b = -1.293681226 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '2.083333334' to each side of the equation. -2.083333334 + 2.083333334 + b = -1.293681226 + 2.083333334 Combine like terms: -2.083333334 + 2.083333334 = 0.000000000 0.000000000 + b = -1.293681226 + 2.083333334 b = -1.293681226 + 2.083333334 Combine like terms: -1.293681226 + 2.083333334 = 0.789652108 b = 0.789652108 Simplifying b = 0.789652108

Solution

The solution to the problem is based on the solutions from the subproblems. b = {3.37701456, 0.789652108}

See similar equations:

| 3x+x=108 | | 2x+30=59 | | 25x+5y=175 | | 3z=2.6+0.7 | | 0.8(3x+8)=3.5-(x-3) | | 4x(2-3x)=0 | | -0.4=-0.7u+0.6u | | 9/5x=32=59 | | log(x)+log(3x+2)=3 | | Y=15x^2+3x | | 21x^2-181x+50=0 | | log(x)+log(x-11)=log(12) | | X^4-2x^3+24x^2+18x+135=0 | | 4p-1p+8=2p+-3 | | -4/5x(9x-20)-3x=4/5x-6 | | r/10=10 | | 3.7x+47.5=14.7-12.7x | | ((5/x)-(3/4x))/((4/7x)-(1/x)) | | r/10 | | 3x+12+3x=6x-8-2x | | (5/x)-(3/4x)/(4/7x)-(1/x) | | -34+16=-2x+8x | | x^2+(11X)-42=0 | | x+(x+4)+(x+8)=20 | | (x-h)k=z | | 48=a+7 | | 30=12y-6y | | x+2=4x+14 | | -18-6k=4+2x | | 5x+x=75 | | 1.5+5=2 | | 6w-10w=8 |

Equations solver categories