9x^2=30x+35

Simple and best practice solution for 9x^2=30x+35 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 9x^2=30x+35 equation:


Simplifying
9x2 = 30x + 35

Reorder the terms:
9x2 = 35 + 30x

Solving
9x2 = 35 + 30x

Solving for variable 'x'.

Reorder the terms:
-35 + -30x + 9x2 = 35 + 30x + -35 + -30x

Reorder the terms:
-35 + -30x + 9x2 = 35 + -35 + 30x + -30x

Combine like terms: 35 + -35 = 0
-35 + -30x + 9x2 = 0 + 30x + -30x
-35 + -30x + 9x2 = 30x + -30x

Combine like terms: 30x + -30x = 0
-35 + -30x + 9x2 = 0

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

Divide each side by '9'.
-3.888888889 + -3.333333333x + x2 = 0

Move the constant term to the right:

Add '3.888888889' to each side of the equation.
-3.888888889 + -3.333333333x + 3.888888889 + x2 = 0 + 3.888888889

Reorder the terms:
-3.888888889 + 3.888888889 + -3.333333333x + x2 = 0 + 3.888888889

Combine like terms: -3.888888889 + 3.888888889 = 0.000000000
0.000000000 + -3.333333333x + x2 = 0 + 3.888888889
-3.333333333x + x2 = 0 + 3.888888889

Combine like terms: 0 + 3.888888889 = 3.888888889
-3.333333333x + x2 = 3.888888889

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 = 3.888888889 + 2.777777779

Reorder the terms:
2.777777779 + -3.333333333x + x2 = 3.888888889 + 2.777777779

Combine like terms: 3.888888889 + 2.777777779 = 6.666666668
2.777777779 + -3.333333333x + x2 = 6.666666668

Factor a perfect square on the left side:
(x + -1.666666667)(x + -1.666666667) = 6.666666668

Calculate the square root of the right side: 2.581988898

Break this problem into two subproblems by setting 
(x + -1.666666667) equal to 2.581988898 and -2.581988898.

Subproblem 1

x + -1.666666667 = 2.581988898 Simplifying x + -1.666666667 = 2.581988898 Reorder the terms: -1.666666667 + x = 2.581988898 Solving -1.666666667 + x = 2.581988898 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 = 2.581988898 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + x = 2.581988898 + 1.666666667 x = 2.581988898 + 1.666666667 Combine like terms: 2.581988898 + 1.666666667 = 4.248655565 x = 4.248655565 Simplifying x = 4.248655565

Subproblem 2

x + -1.666666667 = -2.581988898 Simplifying x + -1.666666667 = -2.581988898 Reorder the terms: -1.666666667 + x = -2.581988898 Solving -1.666666667 + x = -2.581988898 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 = -2.581988898 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + x = -2.581988898 + 1.666666667 x = -2.581988898 + 1.666666667 Combine like terms: -2.581988898 + 1.666666667 = -0.915322231 x = -0.915322231 Simplifying x = -0.915322231

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.248655565, -0.915322231}

See similar equations:

| 7k-1/4=5/12 | | u-22=56 | | 13.9=k-1 | | 4x-0.4=x | | 2/7x=-18 | | 8y+12=6y-2 | | (a+b)(a+c)=0 | | 30-5x=10-7 | | 2d+2=3d-38+4d | | -24x^2y+16x^4+9y^2=0 | | (a+b)(a+c)(b+c)=0 | | -2.3-3x=4.3 | | (x+2)(3x+5)=(2x)(x+9) | | -4(3m+5)=2(m-2) | | 10+5m-17=4-12+3 | | 1/4x=18 | | 31=72-4 | | 6x-n=12 | | 5x-7=8(3x-11) | | 2x+2=9-(3x-5) | | 7+(-6-5)=8 | | 3x+2(1)=6 | | 9y-4=2y+3 | | -2(z+4)=-38 | | y=10x-30 | | -2-s=5tj+6 | | -89.7c=6c*c*c | | 10x-8=-5x+12 | | 6(x+1)=-6 | | 73=x/100000*365 | | 22668567y=4x | | x=20x-50 |

Equations solver categories