-11x^2-2x-8x^2+3+15x=

Simple and best practice solution for -11x^2-2x-8x^2+3+15x= 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 -11x^2-2x-8x^2+3+15x= equation:


Simplifying
-11x2 + -2x + -8x2 + 3 + 15x = 0

Reorder the terms:
3 + -2x + 15x + -11x2 + -8x2 = 0

Combine like terms: -2x + 15x = 13x
3 + 13x + -11x2 + -8x2 = 0

Combine like terms: -11x2 + -8x2 = -19x2
3 + 13x + -19x2 = 0

Solving
3 + 13x + -19x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-19 the coefficient of the squared term: 

Divide each side by '-19'.
-0.1578947368 + -0.6842105263x + x2 = 0

Move the constant term to the right:

Add '0.1578947368' to each side of the equation.
-0.1578947368 + -0.6842105263x + 0.1578947368 + x2 = 0 + 0.1578947368

Reorder the terms:
-0.1578947368 + 0.1578947368 + -0.6842105263x + x2 = 0 + 0.1578947368

Combine like terms: -0.1578947368 + 0.1578947368 = 0.0000000000
0.0000000000 + -0.6842105263x + x2 = 0 + 0.1578947368
-0.6842105263x + x2 = 0 + 0.1578947368

Combine like terms: 0 + 0.1578947368 = 0.1578947368
-0.6842105263x + x2 = 0.1578947368

The x term is -0.6842105263x.  Take half its coefficient (-0.3421052632).
Square it (0.1170360111) and add it to both sides.

Add '0.1170360111' to each side of the equation.
-0.6842105263x + 0.1170360111 + x2 = 0.1578947368 + 0.1170360111

Reorder the terms:
0.1170360111 + -0.6842105263x + x2 = 0.1578947368 + 0.1170360111

Combine like terms: 0.1578947368 + 0.1170360111 = 0.2749307479
0.1170360111 + -0.6842105263x + x2 = 0.2749307479

Factor a perfect square on the left side:
(x + -0.3421052632)(x + -0.3421052632) = 0.2749307479

Calculate the square root of the right side: 0.524338391

Break this problem into two subproblems by setting 
(x + -0.3421052632) equal to 0.524338391 and -0.524338391.

Subproblem 1

x + -0.3421052632 = 0.524338391 Simplifying x + -0.3421052632 = 0.524338391 Reorder the terms: -0.3421052632 + x = 0.524338391 Solving -0.3421052632 + x = 0.524338391 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3421052632' to each side of the equation. -0.3421052632 + 0.3421052632 + x = 0.524338391 + 0.3421052632 Combine like terms: -0.3421052632 + 0.3421052632 = 0.0000000000 0.0000000000 + x = 0.524338391 + 0.3421052632 x = 0.524338391 + 0.3421052632 Combine like terms: 0.524338391 + 0.3421052632 = 0.8664436542 x = 0.8664436542 Simplifying x = 0.8664436542

Subproblem 2

x + -0.3421052632 = -0.524338391 Simplifying x + -0.3421052632 = -0.524338391 Reorder the terms: -0.3421052632 + x = -0.524338391 Solving -0.3421052632 + x = -0.524338391 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3421052632' to each side of the equation. -0.3421052632 + 0.3421052632 + x = -0.524338391 + 0.3421052632 Combine like terms: -0.3421052632 + 0.3421052632 = 0.0000000000 0.0000000000 + x = -0.524338391 + 0.3421052632 x = -0.524338391 + 0.3421052632 Combine like terms: -0.524338391 + 0.3421052632 = -0.1822331278 x = -0.1822331278 Simplifying x = -0.1822331278

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.8664436542, -0.1822331278}

See similar equations:

| 3x+4y-5x= | | 3s/8=6/2 | | 4x-11=10x+9 | | x(15x-8)=12 | | 6-x/5=-2 | | y=3.5-2.85(1-1) | | S/6=4/3 | | 1/9-10/30 | | 5(4-r)=-10r | | 1-d=23 | | -2(X+3)=4-3 | | 3a+2.1+4a=0.7 | | y=3.25+2.85(1-1) | | 5(x+3)=3[x-(6-x)] | | 2.7(x)/3=9 | | -2r-5=-7r-25 | | 11y-9=3y+15 | | 2(y+3)=24 | | y=3.25+2.85(1+1) | | 3/5y-18=15 | | y=3.25-2.85(1+1) | | -1x+5y-8y=6x | | -12=8+f | | 3(d-4)=14 | | 10q+3=6q-9 | | 5(y-5)=15 | | 0.6=x/2400 | | 2x+(x+2)^1/2=6 | | 1=(x-4)1 | | 5(y+6)=66 | | q=20+-1p | | 4-5(x+1)=2x |

Equations solver categories