3x^2+-10x-2=16

Simple and best practice solution for 3x^2+-10x-2=16 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 3x^2+-10x-2=16 equation:


Simplifying
3x2 + -10x + -2 = 16

Reorder the terms:
-2 + -10x + 3x2 = 16

Solving
-2 + -10x + 3x2 = 16

Solving for variable 'x'.

Reorder the terms:
-2 + -16 + -10x + 3x2 = 16 + -16

Combine like terms: -2 + -16 = -18
-18 + -10x + 3x2 = 16 + -16

Combine like terms: 16 + -16 = 0
-18 + -10x + 3x2 = 0

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

Divide each side by '3'.
-6 + -3.333333333x + x2 = 0

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + -3.333333333x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + -3.333333333x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -3.333333333x + x2 = 0 + 6
-3.333333333x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
-3.333333333x + x2 = 6

The x term is -3.333333333x.  Take half its coefficient (-1.666666667).
Square it (2.777777779) and add it to both sides.

Add '2.777777779' to each side of the equation.
-3.333333333x + 2.777777779 + x2 = 6 + 2.777777779

Reorder the terms:
2.777777779 + -3.333333333x + x2 = 6 + 2.777777779

Combine like terms: 6 + 2.777777779 = 8.777777779
2.777777779 + -3.333333333x + x2 = 8.777777779

Factor a perfect square on the left side:
(x + -1.666666667)(x + -1.666666667) = 8.777777779

Calculate the square root of the right side: 2.962731473

Break this problem into two subproblems by setting 
(x + -1.666666667) equal to 2.962731473 and -2.962731473.

Subproblem 1

x + -1.666666667 = 2.962731473 Simplifying x + -1.666666667 = 2.962731473 Reorder the terms: -1.666666667 + x = 2.962731473 Solving -1.666666667 + x = 2.962731473 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.666666667' to each side of the equation. -1.666666667 + 1.666666667 + x = 2.962731473 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + x = 2.962731473 + 1.666666667 x = 2.962731473 + 1.666666667 Combine like terms: 2.962731473 + 1.666666667 = 4.62939814 x = 4.62939814 Simplifying x = 4.62939814

Subproblem 2

x + -1.666666667 = -2.962731473 Simplifying x + -1.666666667 = -2.962731473 Reorder the terms: -1.666666667 + x = -2.962731473 Solving -1.666666667 + x = -2.962731473 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.666666667' to each side of the equation. -1.666666667 + 1.666666667 + x = -2.962731473 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + x = -2.962731473 + 1.666666667 x = -2.962731473 + 1.666666667 Combine like terms: -2.962731473 + 1.666666667 = -1.296064806 x = -1.296064806 Simplifying x = -1.296064806

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.62939814, -1.296064806}

See similar equations:

| 90=43+10x | | 9m^4+4m^4+9m^4-3m^4= | | 330-65=265 | | 5y=2x-6 | | (b^3/4p^2)^-4 | | 90+3x+11+25=180 | | 7x-2=9x-3 | | 20=3m-7 | | 7x+2=9x-3 | | 2x^2/3=50 | | X=38-16 | | s=0.156t-0.59fort | | 3n+1=9+n | | -11+4s=25 | | 0.6x+y=11 | | 25h^2-4=0 | | x+x+5+2x+19=180 | | 61875/x=630 | | 5x+(-5x+1)=6 | | dy/dx=sin9x | | (3x-3)(2x+4)= | | n^2+10=6n+2 | | -4x+6=9x+10 | | 4/3×1077.02 | | -4(x+4)= | | 7x^2/3x^2-27×3x-9/4x^2 | | (6x^3z)(-4yz)(-8xy^3z^5)= | | 19-(x+8)=5x-7 | | 0.3(4x-1)=0.8+x | | 6n=6n+3 | | 2(4-x)-4(-7-7x)= | | y=-(x^3)+5x+750 |

Equations solver categories