3x^2-30x=4

Simple and best practice solution for 3x^2-30x=4 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=4 equation:


Simplifying
3x2 + -30x = 4

Reorder the terms:
-30x + 3x2 = 4

Solving
-30x + 3x2 = 4

Solving for variable 'x'.

Reorder the terms:
-4 + -30x + 3x2 = 4 + -4

Combine like terms: 4 + -4 = 0
-4 + -30x + 3x2 = 0

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

Divide each side by '3'.
-1.333333333 + -10x + x2 = 0

Move the constant term to the right:

Add '1.333333333' to each side of the equation.
-1.333333333 + -10x + 1.333333333 + x2 = 0 + 1.333333333

Reorder the terms:
-1.333333333 + 1.333333333 + -10x + x2 = 0 + 1.333333333

Combine like terms: -1.333333333 + 1.333333333 = 0.000000000
0.000000000 + -10x + x2 = 0 + 1.333333333
-10x + x2 = 0 + 1.333333333

Combine like terms: 0 + 1.333333333 = 1.333333333
-10x + x2 = 1.333333333

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 = 1.333333333 + 25

Reorder the terms:
25 + -10x + x2 = 1.333333333 + 25

Combine like terms: 1.333333333 + 25 = 26.333333333
25 + -10x + x2 = 26.333333333

Factor a perfect square on the left side:
(x + -5)(x + -5) = 26.333333333

Calculate the square root of the right side: 5.131601439

Break this problem into two subproblems by setting 
(x + -5) equal to 5.131601439 and -5.131601439.

Subproblem 1

x + -5 = 5.131601439 Simplifying x + -5 = 5.131601439 Reorder the terms: -5 + x = 5.131601439 Solving -5 + x = 5.131601439 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 = 5.131601439 + 5 Combine like terms: -5 + 5 = 0 0 + x = 5.131601439 + 5 x = 5.131601439 + 5 Combine like terms: 5.131601439 + 5 = 10.131601439 x = 10.131601439 Simplifying x = 10.131601439

Subproblem 2

x + -5 = -5.131601439 Simplifying x + -5 = -5.131601439 Reorder the terms: -5 + x = -5.131601439 Solving -5 + x = -5.131601439 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 = -5.131601439 + 5 Combine like terms: -5 + 5 = 0 0 + x = -5.131601439 + 5 x = -5.131601439 + 5 Combine like terms: -5.131601439 + 5 = -0.131601439 x = -0.131601439 Simplifying x = -0.131601439

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.131601439, -0.131601439}

See similar equations:

| w+37=43 | | 130+130+90+130+120+x=1080 | | 40.5(x-1)=81 | | 1x+4=-1x+4 | | .66(p-12)=-(2p-1)+7 | | -2(6-r)=6 | | 0.3x+-4.2=27 | | 27+8.50t=70 | | (C-2)(c+1)=0 | | 3x-64=32 | | Y=(5100/3)X | | 8x-6x+174=8x+114 | | 3.5x+14=7y | | 2(x^2)-3x=-1 | | 37=-3+5x | | -4(2h-3)=-36 | | 6=x/24 | | (X^2)-9x+81=0 | | 105+85+114+126+x=540 | | [3*(6y^4)^(1/3)]*[5^3*(4y^6)^(1/3)] | | 3(5x+-3)=8x+15+7x-6 | | 13(n+8)=169 | | 885=5(x+18) | | -19+7x=-2x-1 | | 4x^2-6x+2x-3= | | -4(x+18)=99+5x | | 3(5x+-9)=8x+15+7x-6 | | 3r-8r= | | 84=4(2m+7) | | X+-31=180 | | 2n-7=37 | | 13-2w=-11 |

Equations solver categories