b(2b-3)=10

Simple and best practice solution for b(2b-3)=10 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 b(2b-3)=10 equation:


Simplifying
b(2b + -3) = 10

Reorder the terms:
b(-3 + 2b) = 10
(-3 * b + 2b * b) = 10
(-3b + 2b2) = 10

Solving
-3b + 2b2 = 10

Solving for variable 'b'.

Reorder the terms:
-10 + -3b + 2b2 = 10 + -10

Combine like terms: 10 + -10 = 0
-10 + -3b + 2b2 = 0

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

Divide each side by '2'.
-5 + -1.5b + b2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -1.5b + 5 + b2 = 0 + 5

Reorder the terms:
-5 + 5 + -1.5b + b2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -1.5b + b2 = 0 + 5
-1.5b + b2 = 0 + 5

Combine like terms: 0 + 5 = 5
-1.5b + b2 = 5

The b term is -1.5b.  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.
-1.5b + 0.5625 + b2 = 5 + 0.5625

Reorder the terms:
0.5625 + -1.5b + b2 = 5 + 0.5625

Combine like terms: 5 + 0.5625 = 5.5625
0.5625 + -1.5b + b2 = 5.5625

Factor a perfect square on the left side:
(b + -0.75)(b + -0.75) = 5.5625

Calculate the square root of the right side: 2.358495283

Break this problem into two subproblems by setting 
(b + -0.75) equal to 2.358495283 and -2.358495283.

Subproblem 1

b + -0.75 = 2.358495283 Simplifying b + -0.75 = 2.358495283 Reorder the terms: -0.75 + b = 2.358495283 Solving -0.75 + b = 2.358495283 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + b = 2.358495283 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + b = 2.358495283 + 0.75 b = 2.358495283 + 0.75 Combine like terms: 2.358495283 + 0.75 = 3.108495283 b = 3.108495283 Simplifying b = 3.108495283

Subproblem 2

b + -0.75 = -2.358495283 Simplifying b + -0.75 = -2.358495283 Reorder the terms: -0.75 + b = -2.358495283 Solving -0.75 + b = -2.358495283 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + b = -2.358495283 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + b = -2.358495283 + 0.75 b = -2.358495283 + 0.75 Combine like terms: -2.358495283 + 0.75 = -1.608495283 b = -1.608495283 Simplifying b = -1.608495283

Solution

The solution to the problem is based on the solutions from the subproblems. b = {3.108495283, -1.608495283}

See similar equations:

| 10y-2=7b-7.4 | | 2x+3y=4x+6y | | r(r-3)=4 | | 52=(2x+1)(x+1) | | 24-10x=x^2 | | 52=bh | | p(p+5)=36 | | 3x-2(6)= | | 4x-1=8x-9 | | 5(x-8)=10 | | 0.01x^3+1.8x^2-45x=120 | | 8x-8+1=-15 | | 0.01x^3+1.8x^2-45x=0 | | 3(5x-1)=12 | | -72x^7-8x^6= | | 3x+4x=91 | | 27=15a-2 | | 8-[8(-7+2)-2]= | | 0.01x^3-1.8x^2+165x=0 | | (8x)+(9x+5)=90 | | 9s^2-15s= | | 2y^2-5y-6=0 | | 3t-6=9 | | 3a+10=4(a+2)-.5a | | 6p-8(p-6)+2(q-6)= | | 3-4d=6d-17 | | 6-4x=5-3x | | 3x-3=6-2x | | 4x-3.5=4.9+2.6x | | 7p+9q=71 | | 7p+9q=21 | | t^2+4t+4=4 |

Equations solver categories