14x=20-x^2

Simple and best practice solution for 14x=20-x^2 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=20-x^2 equation:


Simplifying
14x = 20 + -1x2

Solving
14x = 20 + -1x2

Solving for variable 'x'.

Reorder the terms:
-20 + 14x + x2 = 20 + -1x2 + -20 + x2

Reorder the terms:
-20 + 14x + x2 = 20 + -20 + -1x2 + x2

Combine like terms: 20 + -20 = 0
-20 + 14x + x2 = 0 + -1x2 + x2
-20 + 14x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-20 + 14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '20' to each side of the equation.
-20 + 14x + 20 + x2 = 0 + 20

Reorder the terms:
-20 + 20 + 14x + x2 = 0 + 20

Combine like terms: -20 + 20 = 0
0 + 14x + x2 = 0 + 20
14x + x2 = 0 + 20

Combine like terms: 0 + 20 = 20
14x + x2 = 20

The x term is 14x.  Take half its coefficient (7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
14x + 49 + x2 = 20 + 49

Reorder the terms:
49 + 14x + x2 = 20 + 49

Combine like terms: 20 + 49 = 69
49 + 14x + x2 = 69

Factor a perfect square on the left side:
(x + 7)(x + 7) = 69

Calculate the square root of the right side: 8.306623863

Break this problem into two subproblems by setting 
(x + 7) equal to 8.306623863 and -8.306623863.

Subproblem 1

x + 7 = 8.306623863 Simplifying x + 7 = 8.306623863 Reorder the terms: 7 + x = 8.306623863 Solving 7 + x = 8.306623863 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 8.306623863 + -7 Combine like terms: 7 + -7 = 0 0 + x = 8.306623863 + -7 x = 8.306623863 + -7 Combine like terms: 8.306623863 + -7 = 1.306623863 x = 1.306623863 Simplifying x = 1.306623863

Subproblem 2

x + 7 = -8.306623863 Simplifying x + 7 = -8.306623863 Reorder the terms: 7 + x = -8.306623863 Solving 7 + x = -8.306623863 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = -8.306623863 + -7 Combine like terms: 7 + -7 = 0 0 + x = -8.306623863 + -7 x = -8.306623863 + -7 Combine like terms: -8.306623863 + -7 = -15.306623863 x = -15.306623863 Simplifying x = -15.306623863

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.306623863, -15.306623863}

See similar equations:

| 7x+7=9+5x | | 13x-6+88=27x-2 | | 325=25(d)+50 | | 6x^2+51x-27=0 | | b-b= | | 98+w=210 | | 6x^2+51-27=0 | | 6(f+3)=42 | | 5c+5.8=51.8 | | -8x+9-2x-4=35 | | 5x=9x-36 | | 4y+2= | | 40=2+x(3)-2 | | 0.25(x+30)-0.06(x-10)=-1.4 | | 4(y+1)= | | -4y+3(-3y+5)=-3-6(9-y) | | 2x+3=-7x+4 | | 4y-0.33(15y-9)=y-7 | | 5(m+1)+6=3(4+m)+(2-1) | | 15x^2-10x+25=0 | | 5(x+10)+4=-8(x-1)-10 | | h=16t^2+24t | | 4y-0.3333333(15y-9)=y-7 | | x+4.25=56.875 | | 3(6x+3)=2(3x+1) | | 0.25t= | | 8x-8=7(x-1)-3 | | 12x+12=12x-12 | | -24+3n=-3(n-6) | | -36.72+5.65t= | | 2w^2-9w=26 | | 2y-4=7y |

Equations solver categories