14x-0.2x^2=30

Simple and best practice solution for 14x-0.2x^2=30 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 14x-0.2x^2=30 equation:


Simplifying
14x + -0.2x2 = 30

Solving
14x + -0.2x2 = 30

Solving for variable 'x'.

Reorder the terms:
-30 + 14x + -0.2x2 = 30 + -30

Combine like terms: 30 + -30 = 0
-30 + 14x + -0.2x2 = 0

Begin completing the square.  Divide all terms by
-0.2 the coefficient of the squared term: 

Divide each side by '-0.2'.
150 + -70x + x2 = 0

Move the constant term to the right:

Add '-150' to each side of the equation.
150 + -70x + -150 + x2 = 0 + -150

Reorder the terms:
150 + -150 + -70x + x2 = 0 + -150

Combine like terms: 150 + -150 = 0
0 + -70x + x2 = 0 + -150
-70x + x2 = 0 + -150

Combine like terms: 0 + -150 = -150
-70x + x2 = -150

The x term is -70x.  Take half its coefficient (-35).
Square it (1225) and add it to both sides.

Add '1225' to each side of the equation.
-70x + 1225 + x2 = -150 + 1225

Reorder the terms:
1225 + -70x + x2 = -150 + 1225

Combine like terms: -150 + 1225 = 1075
1225 + -70x + x2 = 1075

Factor a perfect square on the left side:
(x + -35)(x + -35) = 1075

Calculate the square root of the right side: 32.787192622

Break this problem into two subproblems by setting 
(x + -35) equal to 32.787192622 and -32.787192622.

Subproblem 1

x + -35 = 32.787192622 Simplifying x + -35 = 32.787192622 Reorder the terms: -35 + x = 32.787192622 Solving -35 + x = 32.787192622 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '35' to each side of the equation. -35 + 35 + x = 32.787192622 + 35 Combine like terms: -35 + 35 = 0 0 + x = 32.787192622 + 35 x = 32.787192622 + 35 Combine like terms: 32.787192622 + 35 = 67.787192622 x = 67.787192622 Simplifying x = 67.787192622

Subproblem 2

x + -35 = -32.787192622 Simplifying x + -35 = -32.787192622 Reorder the terms: -35 + x = -32.787192622 Solving -35 + x = -32.787192622 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '35' to each side of the equation. -35 + 35 + x = -32.787192622 + 35 Combine like terms: -35 + 35 = 0 0 + x = -32.787192622 + 35 x = -32.787192622 + 35 Combine like terms: -32.787192622 + 35 = 2.212807378 x = 2.212807378 Simplifying x = 2.212807378

Solution

The solution to the problem is based on the solutions from the subproblems. x = {67.787192622, 2.212807378}

See similar equations:

| 25v^2+80v+64=0 | | x-x*.15=119 | | x+x*.15=119 | | 2.3-4=-16 | | -5.8x=-227.94 | | 100+100*.15= | | x*.15=100 | | x*.015=100 | | x*100=0.15 | | 0.8w-0.6=-5+w | | 8.4x+4.93=-15.23 | | -3.5a=-267.75 | | X*.15=129 | | e^6x=7 | | 3c+12=6c+11.52 | | x+7*2=-36 | | (8x-7)(2x+3)=0 | | 10n=9n+18 | | 5y=2x-10 | | 7.5a-3.9=27.60 | | y=(x+3)(x-4) | | -2.8+0.7p=0.9p+53 | | 5x-7=5+7 | | y+4=6 | | 7x+1x=6x+24+5x | | 50+10w=s | | (x-4)(2x-3)=12 | | 7y-3(4y^2-6)-(-5y^2+y-2)= | | 368=2(7w)+2w | | 200-5w=50 | | 200-50-5w=5 | | 184=(L)+7w |

Equations solver categories