-3x^2+30x-16=

Simple and best practice solution for -3x^2+30x-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+30x-16= equation:


Simplifying
-3x2 + 30x + -16 = 0

Reorder the terms:
-16 + 30x + -3x2 = 0

Solving
-16 + 30x + -3x2 = 0

Solving for variable 'x'.

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

Divide each side by '-3'.
5.333333333 + -10x + x2 = 0

Move the constant term to the right:

Add '-5.333333333' to each side of the equation.
5.333333333 + -10x + -5.333333333 + x2 = 0 + -5.333333333

Reorder the terms:
5.333333333 + -5.333333333 + -10x + x2 = 0 + -5.333333333

Combine like terms: 5.333333333 + -5.333333333 = 0.000000000
0.000000000 + -10x + x2 = 0 + -5.333333333
-10x + x2 = 0 + -5.333333333

Combine like terms: 0 + -5.333333333 = -5.333333333
-10x + x2 = -5.333333333

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = -5.333333333 + 25

Reorder the terms:
25 + -10x + x2 = -5.333333333 + 25

Combine like terms: -5.333333333 + 25 = 19.666666667
25 + -10x + x2 = 19.666666667

Factor a perfect square on the left side:
(x + -5)(x + -5) = 19.666666667

Calculate the square root of the right side: 4.434711565

Break this problem into two subproblems by setting 
(x + -5) equal to 4.434711565 and -4.434711565.

Subproblem 1

x + -5 = 4.434711565 Simplifying x + -5 = 4.434711565 Reorder the terms: -5 + x = 4.434711565 Solving -5 + x = 4.434711565 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 4.434711565 + 5 Combine like terms: -5 + 5 = 0 0 + x = 4.434711565 + 5 x = 4.434711565 + 5 Combine like terms: 4.434711565 + 5 = 9.434711565 x = 9.434711565 Simplifying x = 9.434711565

Subproblem 2

x + -5 = -4.434711565 Simplifying x + -5 = -4.434711565 Reorder the terms: -5 + x = -4.434711565 Solving -5 + x = -4.434711565 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -4.434711565 + 5 Combine like terms: -5 + 5 = 0 0 + x = -4.434711565 + 5 x = -4.434711565 + 5 Combine like terms: -4.434711565 + 5 = 0.565288435 x = 0.565288435 Simplifying x = 0.565288435

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.434711565, 0.565288435}

See similar equations:

| 16=-256+35t | | 5x+8=-10+3x | | k/7-8=14 | | h=-256+35t | | 2+x=-x-18 | | 1-7x=27 | | 5x+27=10x-19 | | 1-2(t-3)=3t-2(t+3) | | 4x+2y+8-3-y-x=0 | | 7x+9=-2x-27 | | 4x-3=65 | | 15-(3d+7)=2 | | 4x=3y-11 | | -2(t-8)-(t+3)=5 | | -14k+18=3k-16 | | 11x^2+7=0 | | 2x+5x-14=4 | | -7x-8=-8+2x | | 12x+6-8x-4x-3+12=0 | | x^2-12x-85=0 | | -7(9+x)=-119 | | 16t^3-25=0 | | y=4x^2+7 | | 12y+12x+12-6x+12=0 | | 12x+12=7x-18 | | 0.375p+0.16=0.33+0.25 | | 8x-7=x^2+5 | | -1.5+3x=12.5-4x | | 4x-2=2x+20 | | 25(x-12)+1000=32(x-10)+740 | | 2-3x-11=4x-6 | | 4x^2-4x-10=0 |

Equations solver categories