9=.007x^2+.003x

Simple and best practice solution for 9=.007x^2+.003x 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 9=.007x^2+.003x equation:


Simplifying
9 = 0.007x2 + 0.003x

Reorder the terms:
9 = 0.003x + 0.007x2

Solving
9 = 0.003x + 0.007x2

Solving for variable 'x'.

Reorder the terms:
9 + -0.003x + -0.007x2 = 0.003x + -0.003x + 0.007x2 + -0.007x2

Combine like terms: 0.003x + -0.003x = 0.000
9 + -0.003x + -0.007x2 = 0.000 + 0.007x2 + -0.007x2
9 + -0.003x + -0.007x2 = 0.007x2 + -0.007x2

Combine like terms: 0.007x2 + -0.007x2 = 0.000
9 + -0.003x + -0.007x2 = 0.000

Begin completing the square.  Divide all terms by
-0.007 the coefficient of the squared term: 

Divide each side by '-0.007'.
-1285.714286 + 0.4285714286x + x2 = 0

Move the constant term to the right:

Add '1285.714286' to each side of the equation.
-1285.714286 + 0.4285714286x + 1285.714286 + x2 = 0 + 1285.714286

Reorder the terms:
-1285.714286 + 1285.714286 + 0.4285714286x + x2 = 0 + 1285.714286

Combine like terms: -1285.714286 + 1285.714286 = 0.000000
0.000000 + 0.4285714286x + x2 = 0 + 1285.714286
0.4285714286x + x2 = 0 + 1285.714286

Combine like terms: 0 + 1285.714286 = 1285.714286
0.4285714286x + x2 = 1285.714286

The x term is 0.4285714286x.  Take half its coefficient (0.2142857143).
Square it (0.04591836735) and add it to both sides.

Add '0.04591836735' to each side of the equation.
0.4285714286x + 0.04591836735 + x2 = 1285.714286 + 0.04591836735

Reorder the terms:
0.04591836735 + 0.4285714286x + x2 = 1285.714286 + 0.04591836735

Combine like terms: 1285.714286 + 0.04591836735 = 1285.76020436735
0.04591836735 + 0.4285714286x + x2 = 1285.76020436735

Factor a perfect square on the left side:
(x + 0.2142857143)(x + 0.2142857143) = 1285.76020436735

Calculate the square root of the right side: 35.857498579

Break this problem into two subproblems by setting 
(x + 0.2142857143) equal to 35.857498579 and -35.857498579.

Subproblem 1

x + 0.2142857143 = 35.857498579 Simplifying x + 0.2142857143 = 35.857498579 Reorder the terms: 0.2142857143 + x = 35.857498579 Solving 0.2142857143 + x = 35.857498579 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2142857143' to each side of the equation. 0.2142857143 + -0.2142857143 + x = 35.857498579 + -0.2142857143 Combine like terms: 0.2142857143 + -0.2142857143 = 0.0000000000 0.0000000000 + x = 35.857498579 + -0.2142857143 x = 35.857498579 + -0.2142857143 Combine like terms: 35.857498579 + -0.2142857143 = 35.6432128647 x = 35.6432128647 Simplifying x = 35.6432128647

Subproblem 2

x + 0.2142857143 = -35.857498579 Simplifying x + 0.2142857143 = -35.857498579 Reorder the terms: 0.2142857143 + x = -35.857498579 Solving 0.2142857143 + x = -35.857498579 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2142857143' to each side of the equation. 0.2142857143 + -0.2142857143 + x = -35.857498579 + -0.2142857143 Combine like terms: 0.2142857143 + -0.2142857143 = 0.0000000000 0.0000000000 + x = -35.857498579 + -0.2142857143 x = -35.857498579 + -0.2142857143 Combine like terms: -35.857498579 + -0.2142857143 = -36.0717842933 x = -36.0717842933 Simplifying x = -36.0717842933

Solution

The solution to the problem is based on the solutions from the subproblems. x = {35.6432128647, -36.0717842933}

See similar equations:

| 6x-30/2-x0 | | -logx=8.5 | | 4x^2+4y^2=10 | | =240 | | 3x+24=x-12 | | -4(-3x-y)=6(y+4x) | | h=20(1)-5(1*1) | | Log(7x-1)=3 | | x^8y^8-x^7y^6+x^6y^5+x^5y^5=0 | | 10x+4y=58 | | 3x-7=6+4+4x | | 4x^2-18y-32x+19=4y^2 | | 10x^5+35x= | | 0.4(7-9)=0.3(y+4) | | h/3=87 | | 450000=-425x^2+45500x-650000 | | 7tan^2x-21=0 | | x=5log(50) | | f(2a)=3(2a)+5 | | 4x^2-21=11x | | f(2a)=3x+5 | | 9r^2+7=16 | | 3t+10=18 | | 36c+20=6c-9 | | 5X-13=15+7 | | f(-4)=12+5 | | 16p^2-6=10 | | 5X-13=17+7 | | 2+3=6x | | 3.6w=1.5w+24 | | 3x=244 | | 22/x=88 |

Equations solver categories