6x(2x+3x)-2(9x^2-5x)-485=0

Simple and best practice solution for 6x(2x+3x)-2(9x^2-5x)-485=0 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 6x(2x+3x)-2(9x^2-5x)-485=0 equation:


Simplifying
6x(2x + 3x) + -2(9x2 + -5x) + -485 = 0

Combine like terms: 2x + 3x = 5x
6x(5x) + -2(9x2 + -5x) + -485 = 0

Remove parenthesis around (5x)
6x * 5x + -2(9x2 + -5x) + -485 = 0

Reorder the terms for easier multiplication:
6 * 5x * x + -2(9x2 + -5x) + -485 = 0

Multiply 6 * 5
30x * x + -2(9x2 + -5x) + -485 = 0

Multiply x * x
30x2 + -2(9x2 + -5x) + -485 = 0

Reorder the terms:
30x2 + -2(-5x + 9x2) + -485 = 0
30x2 + (-5x * -2 + 9x2 * -2) + -485 = 0
30x2 + (10x + -18x2) + -485 = 0

Reorder the terms:
-485 + 10x + 30x2 + -18x2 = 0

Combine like terms: 30x2 + -18x2 = 12x2
-485 + 10x + 12x2 = 0

Solving
-485 + 10x + 12x2 = 0

Solving for variable 'x'.

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

Divide each side by '12'.
-40.41666667 + 0.8333333333x + x2 = 0

Move the constant term to the right:

Add '40.41666667' to each side of the equation.
-40.41666667 + 0.8333333333x + 40.41666667 + x2 = 0 + 40.41666667

Reorder the terms:
-40.41666667 + 40.41666667 + 0.8333333333x + x2 = 0 + 40.41666667

Combine like terms: -40.41666667 + 40.41666667 = 0.00000000
0.00000000 + 0.8333333333x + x2 = 0 + 40.41666667
0.8333333333x + x2 = 0 + 40.41666667

Combine like terms: 0 + 40.41666667 = 40.41666667
0.8333333333x + x2 = 40.41666667

The x term is 0.8333333333x.  Take half its coefficient (0.4166666667).
Square it (0.1736111111) and add it to both sides.

Add '0.1736111111' to each side of the equation.
0.8333333333x + 0.1736111111 + x2 = 40.41666667 + 0.1736111111

Reorder the terms:
0.1736111111 + 0.8333333333x + x2 = 40.41666667 + 0.1736111111

Combine like terms: 40.41666667 + 0.1736111111 = 40.5902777811
0.1736111111 + 0.8333333333x + x2 = 40.5902777811

Factor a perfect square on the left side:
(x + 0.4166666667)(x + 0.4166666667) = 40.5902777811

Calculate the square root of the right side: 6.371049975

Break this problem into two subproblems by setting 
(x + 0.4166666667) equal to 6.371049975 and -6.371049975.

Subproblem 1

x + 0.4166666667 = 6.371049975 Simplifying x + 0.4166666667 = 6.371049975 Reorder the terms: 0.4166666667 + x = 6.371049975 Solving 0.4166666667 + x = 6.371049975 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4166666667' to each side of the equation. 0.4166666667 + -0.4166666667 + x = 6.371049975 + -0.4166666667 Combine like terms: 0.4166666667 + -0.4166666667 = 0.0000000000 0.0000000000 + x = 6.371049975 + -0.4166666667 x = 6.371049975 + -0.4166666667 Combine like terms: 6.371049975 + -0.4166666667 = 5.9543833083 x = 5.9543833083 Simplifying x = 5.9543833083

Subproblem 2

x + 0.4166666667 = -6.371049975 Simplifying x + 0.4166666667 = -6.371049975 Reorder the terms: 0.4166666667 + x = -6.371049975 Solving 0.4166666667 + x = -6.371049975 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4166666667' to each side of the equation. 0.4166666667 + -0.4166666667 + x = -6.371049975 + -0.4166666667 Combine like terms: 0.4166666667 + -0.4166666667 = 0.0000000000 0.0000000000 + x = -6.371049975 + -0.4166666667 x = -6.371049975 + -0.4166666667 Combine like terms: -6.371049975 + -0.4166666667 = -6.7877166417 x = -6.7877166417 Simplifying x = -6.7877166417

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.9543833083, -6.7877166417}

See similar equations:

| 4e-3e-2e=1-a | | 19x+15=8x-77 | | 6p+15=-10p | | (4-3n)+(7-3n)+(12-3n)+(19+3n)= | | 2x+3=16x^2 | | 4+-3n=43 | | 7+x=6.4+1.2x | | 3x+2x^3+5x^5=0 | | x-1.2x= | | 15+11=p | | 11*p=15 | | 2m+5=18 | | 35=-2x+-15 | | 11+p=15 | | 6m(m-4)=m-15 | | f(n)=n^2-n | | 600x+9000=180x+17820 | | y^5-5y^4+4y^3=0 | | 6(2n+1)=7(6n+7)+5 | | 5(z+7)=z | | 4.92=.55+.23(x-1) | | 5(3n+4)=9(6n+5)+5 | | 2(2+8x)-5(x-5)=-4 | | 8x=10y+12 | | 7x-3=12x+4 | | 12(3x+5)-5(2x-3)=6x-25 | | 3+2p-1=6p+6-2p | | 8b+3y+45z+2l=1i | | 15x^2-79x+128=0 | | Py-9= | | -16t^2+96+12=120 | | 2(x+1)+2(x-3)=18 |

Equations solver categories