10x^2+11x-4=0

Simple and best practice solution for 10x^2+11x-4=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 10x^2+11x-4=0 equation:


Simplifying
10x2 + 11x + -4 = 0

Reorder the terms:
-4 + 11x + 10x2 = 0

Solving
-4 + 11x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
-0.4 + 1.1x + x2 = 0

Move the constant term to the right:

Add '0.4' to each side of the equation.
-0.4 + 1.1x + 0.4 + x2 = 0 + 0.4

Reorder the terms:
-0.4 + 0.4 + 1.1x + x2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + 1.1x + x2 = 0 + 0.4
1.1x + x2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
1.1x + x2 = 0.4

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 = 0.4 + 0.3025

Reorder the terms:
0.3025 + 1.1x + x2 = 0.4 + 0.3025

Combine like terms: 0.4 + 0.3025 = 0.7025
0.3025 + 1.1x + x2 = 0.7025

Factor a perfect square on the left side:
(x + 0.55)(x + 0.55) = 0.7025

Calculate the square root of the right side: 0.838152731

Break this problem into two subproblems by setting 
(x + 0.55) equal to 0.838152731 and -0.838152731.

Subproblem 1

x + 0.55 = 0.838152731 Simplifying x + 0.55 = 0.838152731 Reorder the terms: 0.55 + x = 0.838152731 Solving 0.55 + x = 0.838152731 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 = 0.838152731 + -0.55 Combine like terms: 0.55 + -0.55 = 0.00 0.00 + x = 0.838152731 + -0.55 x = 0.838152731 + -0.55 Combine like terms: 0.838152731 + -0.55 = 0.288152731 x = 0.288152731 Simplifying x = 0.288152731

Subproblem 2

x + 0.55 = -0.838152731 Simplifying x + 0.55 = -0.838152731 Reorder the terms: 0.55 + x = -0.838152731 Solving 0.55 + x = -0.838152731 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 = -0.838152731 + -0.55 Combine like terms: 0.55 + -0.55 = 0.00 0.00 + x = -0.838152731 + -0.55 x = -0.838152731 + -0.55 Combine like terms: -0.838152731 + -0.55 = -1.388152731 x = -1.388152731 Simplifying x = -1.388152731

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.288152731, -1.388152731}

See similar equations:

| 3+5x=7x+3 | | 2x+1.05=x-3.56 | | 33=4m | | m+25=1 | | 2x^(-1/3) | | 2n=11 | | 4x+1+7x=100 | | 16x^2+8x+1=5 | | 2x^2+8-4x+3x-6x^2+7= | | .2n+5n=7n-18 | | 8x-8+8x=x^2-x | | x^2+12x+36=11 | | 6x+3=x+14 | | 4x=8x^2 | | 9y^2-15y+6=0 | | tr+5=d | | z^2+25-47=0 | | (x+4)(x+4)=12 | | 24(x-2)=3(8x+3)-57 | | 3x+2+7x=42 | | 3x^2+5x-7x+3-5x^2+2= | | 4a^2+18a-10=0 | | 3b^2-b=0 | | x-7/10=-8/9 | | Y/2-1/3y | | 5p-3=38 | | 5x^2+2x-4= | | 5+7x=47 | | 24(x-2)=3(8x+3) | | a+b+c=p | | 4n^2-14n+12=0 | | 7/8+4/10 |

Equations solver categories