5b^2-6b-10=0

Simple and best practice solution for 5b^2-6b-10=0 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 5b^2-6b-10=0 equation:


Simplifying
5b2 + -6b + -10 = 0

Reorder the terms:
-10 + -6b + 5b2 = 0

Solving
-10 + -6b + 5b2 = 0

Solving for variable 'b'.

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

Divide each side by '5'.
-2 + -1.2b + b2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -1.2b + 2 + b2 = 0 + 2

Reorder the terms:
-2 + 2 + -1.2b + b2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -1.2b + b2 = 0 + 2
-1.2b + b2 = 0 + 2

Combine like terms: 0 + 2 = 2
-1.2b + b2 = 2

The b term is -1.2b.  Take half its coefficient (-0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
-1.2b + 0.36 + b2 = 2 + 0.36

Reorder the terms:
0.36 + -1.2b + b2 = 2 + 0.36

Combine like terms: 2 + 0.36 = 2.36
0.36 + -1.2b + b2 = 2.36

Factor a perfect square on the left side:
(b + -0.6)(b + -0.6) = 2.36

Calculate the square root of the right side: 1.53622915

Break this problem into two subproblems by setting 
(b + -0.6) equal to 1.53622915 and -1.53622915.

Subproblem 1

b + -0.6 = 1.53622915 Simplifying b + -0.6 = 1.53622915 Reorder the terms: -0.6 + b = 1.53622915 Solving -0.6 + b = 1.53622915 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + b = 1.53622915 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + b = 1.53622915 + 0.6 b = 1.53622915 + 0.6 Combine like terms: 1.53622915 + 0.6 = 2.13622915 b = 2.13622915 Simplifying b = 2.13622915

Subproblem 2

b + -0.6 = -1.53622915 Simplifying b + -0.6 = -1.53622915 Reorder the terms: -0.6 + b = -1.53622915 Solving -0.6 + b = -1.53622915 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + b = -1.53622915 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + b = -1.53622915 + 0.6 b = -1.53622915 + 0.6 Combine like terms: -1.53622915 + 0.6 = -0.93622915 b = -0.93622915 Simplifying b = -0.93622915

Solution

The solution to the problem is based on the solutions from the subproblems. b = {2.13622915, -0.93622915}

See similar equations:

| 2.3h=82.6 | | 2x+47=0 | | m^2-17m+72=0 | | 70=n^2+7n | | X+2.1=4.6 | | 10-5d-7d=-10d-6 | | -12=-4u+7(u-3) | | 3.5-8= | | 4(X^2-3)+10=22 | | 4X=1X+15 | | 3x+8+6x=10x-x+12-4x | | 8(c-5)+2c=10 | | -9f=-7-10f | | .06(x+8)=.03(2x+7)+.27 | | 13x^2-22=0 | | 4y=3y-22 | | 0.4y=38 | | -6-12=42 | | 3/2x=-8 | | 4x+3=7x-42 | | 3.2x=-8 | | cosx+(cos^2)x=0 | | 4r+7=5r | | 2x+7+3x=12x+9y | | (6(7.5)-7)*2= | | 4x^2-40x-525=0 | | 6.1-2.1(t+2)=3(t+1.5) | | x-y=180 | | (6(7.5)-f)*2= | | 2x+7+3x=12x | | 19+m+17+m=4 | | y^8+17y^4+70=0 |

Equations solver categories