3x^2-16x=3

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


Simplifying
3x2 + -16x = 3

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

Solving
-16x + 3x2 = 3

Solving for variable 'x'.

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

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

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

Divide each side by '3'.
-1 + -5.333333333x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -5.333333333x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + -5.333333333x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -5.333333333x + x2 = 0 + 1
-5.333333333x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
-5.333333333x + x2 = 1

The x term is -5.333333333x.  Take half its coefficient (-2.666666667).
Square it (7.111111113) and add it to both sides.

Add '7.111111113' to each side of the equation.
-5.333333333x + 7.111111113 + x2 = 1 + 7.111111113

Reorder the terms:
7.111111113 + -5.333333333x + x2 = 1 + 7.111111113

Combine like terms: 1 + 7.111111113 = 8.111111113
7.111111113 + -5.333333333x + x2 = 8.111111113

Factor a perfect square on the left side:
(x + -2.666666667)(x + -2.666666667) = 8.111111113

Calculate the square root of the right side: 2.848001249

Break this problem into two subproblems by setting 
(x + -2.666666667) equal to 2.848001249 and -2.848001249.

Subproblem 1

x + -2.666666667 = 2.848001249 Simplifying x + -2.666666667 = 2.848001249 Reorder the terms: -2.666666667 + x = 2.848001249 Solving -2.666666667 + x = 2.848001249 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.666666667' to each side of the equation. -2.666666667 + 2.666666667 + x = 2.848001249 + 2.666666667 Combine like terms: -2.666666667 + 2.666666667 = 0.000000000 0.000000000 + x = 2.848001249 + 2.666666667 x = 2.848001249 + 2.666666667 Combine like terms: 2.848001249 + 2.666666667 = 5.514667916 x = 5.514667916 Simplifying x = 5.514667916

Subproblem 2

x + -2.666666667 = -2.848001249 Simplifying x + -2.666666667 = -2.848001249 Reorder the terms: -2.666666667 + x = -2.848001249 Solving -2.666666667 + x = -2.848001249 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.666666667' to each side of the equation. -2.666666667 + 2.666666667 + x = -2.848001249 + 2.666666667 Combine like terms: -2.666666667 + 2.666666667 = 0.000000000 0.000000000 + x = -2.848001249 + 2.666666667 x = -2.848001249 + 2.666666667 Combine like terms: -2.848001249 + 2.666666667 = -0.181334582 x = -0.181334582 Simplifying x = -0.181334582

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.514667916, -0.181334582}

See similar equations:

| 15x^2-11x^2-12=0 | | -7(-5m+6)+6(-3m-12)=73 | | -3r+7=-2r | | -9x-17=37 | | 5x^2-32x+44=0 | | 19d=3(ax+d)-d | | 9-8k^2=183 | | 60+5(a)=95 | | 15y+31=-29 | | -22=-8x-3x | | -6-9t=-8t | | 4x-5=-12-13 | | 10(7n+2)+7(12+12n)=-50 | | G=F+Frt | | x-5+4x=-15 | | .98x+.67(2.1-x)=1.56 | | 9(x-12)+11(9x+5)=-53 | | t+0.6=0.4 | | 5n^2+9=294 | | (x-4-i)(x-4+i)=0 | | 30x-12x= | | -1/2x^2=2 | | (x^6/7)^2 | | 2x+14+5x=0 | | 48=6(v+10)-12(1-6v) | | 9(-2-2x)+3x=27 | | y=-2x^2+3x-2 | | -2x-16=4 | | 4(3-j)+2j(j-3)+8(j-3)=0 | | m^2+4m=-3 | | -7(5x-3)+8(x+12)=9 | | 7x^2-17x-44= |

Equations solver categories