0=10x^2-11x-15

Simple and best practice solution for 0=10x^2-11x-15 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 0=10x^2-11x-15 equation:


Simplifying
0 = 10x2 + -11x + -15

Reorder the terms:
0 = -15 + -11x + 10x2

Solving
0 = -15 + -11x + 10x2

Solving for variable 'x'.

Combine like terms: 0 + 15 = 15
15 + 11x + -10x2 = -15 + -11x + 10x2 + 15 + 11x + -10x2

Reorder the terms:
15 + 11x + -10x2 = -15 + 15 + -11x + 11x + 10x2 + -10x2

Combine like terms: -15 + 15 = 0
15 + 11x + -10x2 = 0 + -11x + 11x + 10x2 + -10x2
15 + 11x + -10x2 = -11x + 11x + 10x2 + -10x2

Combine like terms: -11x + 11x = 0
15 + 11x + -10x2 = 0 + 10x2 + -10x2
15 + 11x + -10x2 = 10x2 + -10x2

Combine like terms: 10x2 + -10x2 = 0
15 + 11x + -10x2 = 0

Begin completing the square.  Divide all terms by
-10 the coefficient of the squared term: 

Divide each side by '-10'.
-1.5 + -1.1x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -1.1x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -1.1x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -1.1x + x2 = 0 + 1.5
-1.1x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-1.1x + x2 = 1.5

The x term is -1.1x.  Take half its coefficient (-0.55).
Square it (0.3025) and add it to both sides.

Add '0.3025' to each side of the equation.
-1.1x + 0.3025 + x2 = 1.5 + 0.3025

Reorder the terms:
0.3025 + -1.1x + x2 = 1.5 + 0.3025

Combine like terms: 1.5 + 0.3025 = 1.8025
0.3025 + -1.1x + x2 = 1.8025

Factor a perfect square on the left side:
(x + -0.55)(x + -0.55) = 1.8025

Calculate the square root of the right side: 1.342572158

Break this problem into two subproblems by setting 
(x + -0.55) equal to 1.342572158 and -1.342572158.

Subproblem 1

x + -0.55 = 1.342572158 Simplifying x + -0.55 = 1.342572158 Reorder the terms: -0.55 + x = 1.342572158 Solving -0.55 + x = 1.342572158 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.55' to each side of the equation. -0.55 + 0.55 + x = 1.342572158 + 0.55 Combine like terms: -0.55 + 0.55 = 0.00 0.00 + x = 1.342572158 + 0.55 x = 1.342572158 + 0.55 Combine like terms: 1.342572158 + 0.55 = 1.892572158 x = 1.892572158 Simplifying x = 1.892572158

Subproblem 2

x + -0.55 = -1.342572158 Simplifying x + -0.55 = -1.342572158 Reorder the terms: -0.55 + x = -1.342572158 Solving -0.55 + x = -1.342572158 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.55' to each side of the equation. -0.55 + 0.55 + x = -1.342572158 + 0.55 Combine like terms: -0.55 + 0.55 = 0.00 0.00 + x = -1.342572158 + 0.55 x = -1.342572158 + 0.55 Combine like terms: -1.342572158 + 0.55 = -0.792572158 x = -0.792572158 Simplifying x = -0.792572158

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.892572158, -0.792572158}

See similar equations:

| 4(3)=4x-7 | | 3/16=m/18 | | (x^4)-(5x^3)+(6x)-2=0 | | 5+3w=13 | | y=2ln(15x) | | -3-7(15)= | | 1159*W=998 | | -3-7(-15)= | | 1159-W=998 | | 2C^2+C-21=0 | | 2.3x+1.8y=18 | | 1/3(6x-15=1/2(10x-4) | | 4(3x-5)+15=19 | | 110x=1000 | | 1000=125x | | 2ab*3a*4b= | | -9+7y+2-5y= | | 9x+9y=0 | | 7(2x+6)+19= | | 8a^2+4a-4=0 | | 5x/7=x-5/35 | | 4w^2+2w=126 | | 9m^2+77m=-40 | | 2.8176470588235296*W=8.247933884 | | 121*W=998 | | 8x^2-33x+27=0 | | 83-17=56+X | | 83-17=56+7 | | 6+log(4)(x-5)=7 | | 2.3x+0.8y=18 | | Y*1.5=7.5 | | 2.3(x)+0.8(y)=18mg |

Equations solver categories