X^2+9X=14

Simple and best practice solution for X^2+9X=14 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 X^2+9X=14 equation:


Simplifying
X2 + 9X = 14

Reorder the terms:
9X + X2 = 14

Solving
9X + X2 = 14

Solving for variable 'X'.

Reorder the terms:
-14 + 9X + X2 = 14 + -14

Combine like terms: 14 + -14 = 0
-14 + 9X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '14' to each side of the equation.
-14 + 9X + 14 + X2 = 0 + 14

Reorder the terms:
-14 + 14 + 9X + X2 = 0 + 14

Combine like terms: -14 + 14 = 0
0 + 9X + X2 = 0 + 14
9X + X2 = 0 + 14

Combine like terms: 0 + 14 = 14
9X + X2 = 14

The X term is 9X.  Take half its coefficient (4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
9X + 20.25 + X2 = 14 + 20.25

Reorder the terms:
20.25 + 9X + X2 = 14 + 20.25

Combine like terms: 14 + 20.25 = 34.25
20.25 + 9X + X2 = 34.25

Factor a perfect square on the left side:
(X + 4.5)(X + 4.5) = 34.25

Calculate the square root of the right side: 5.852349955

Break this problem into two subproblems by setting 
(X + 4.5) equal to 5.852349955 and -5.852349955.

Subproblem 1

X + 4.5 = 5.852349955 Simplifying X + 4.5 = 5.852349955 Reorder the terms: 4.5 + X = 5.852349955 Solving 4.5 + X = 5.852349955 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + X = 5.852349955 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + X = 5.852349955 + -4.5 X = 5.852349955 + -4.5 Combine like terms: 5.852349955 + -4.5 = 1.352349955 X = 1.352349955 Simplifying X = 1.352349955

Subproblem 2

X + 4.5 = -5.852349955 Simplifying X + 4.5 = -5.852349955 Reorder the terms: 4.5 + X = -5.852349955 Solving 4.5 + X = -5.852349955 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + X = -5.852349955 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + X = -5.852349955 + -4.5 X = -5.852349955 + -4.5 Combine like terms: -5.852349955 + -4.5 = -10.352349955 X = -10.352349955 Simplifying X = -10.352349955

Solution

The solution to the problem is based on the solutions from the subproblems. X = {1.352349955, -10.352349955}

See similar equations:

| -71+891=x | | .33x+2=1x | | -1.4x-20= | | 5k-13k-6= | | 3x-4(x+6)=-15 | | 180=3x+2(5x+12) | | 2(x-4)=x-.25 | | -3x^2-5x+2=0 | | 8x-4=4(2x+1) | | 7(x+4)+3(5-x)=47 | | -2y+19=3 | | 5w+4=2w-11 | | -8m-1=9+4 | | 3(-5x-10)=45 | | 4(7x+6)-8=72 | | 15(6-x)=12(5-x) | | -1+8(8y-7)=6(7y-4)+4 | | 12m=10 | | -9t+2-2=56-2 | | -0.8=-7y+1.3 | | (3x+6)+(2x-5)=-29 | | 9-4x=45 | | -6x-9-4x=22 | | 2.5x+y=-2 | | 4e^6=7e^5 | | (41+n)+9=4+(18+9) | | 5x+84=6x-34 | | 14x+57-4x=7(x+1)-140 | | (3x^2)+7x-6=0 | | 2x+5x+6x= | | 2(x+4)-5=2x-3-1 | | .66(y+.8)=.375(y-2) |

Equations solver categories