x^2+7x+2=14

Simple and best practice solution for x^2+7x+2=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+7x+2=14 equation:


Simplifying
x2 + 7x + 2 = 14

Reorder the terms:
2 + 7x + x2 = 14

Solving
2 + 7x + x2 = 14

Solving for variable 'x'.

Reorder the terms:
2 + -14 + 7x + x2 = 14 + -14

Combine like terms: 2 + -14 = -12
-12 + 7x + x2 = 14 + -14

Combine like terms: 14 + -14 = 0
-12 + 7x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + 7x + 12 + x2 = 0 + 12

Reorder the terms:
-12 + 12 + 7x + x2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 7x + x2 = 0 + 12
7x + x2 = 0 + 12

Combine like terms: 0 + 12 = 12
7x + x2 = 12

The x term is 7x.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7x + 12.25 + x2 = 12 + 12.25

Reorder the terms:
12.25 + 7x + x2 = 12 + 12.25

Combine like terms: 12 + 12.25 = 24.25
12.25 + 7x + x2 = 24.25

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = 24.25

Calculate the square root of the right side: 4.924428901

Break this problem into two subproblems by setting 
(x + 3.5) equal to 4.924428901 and -4.924428901.

Subproblem 1

x + 3.5 = 4.924428901 Simplifying x + 3.5 = 4.924428901 Reorder the terms: 3.5 + x = 4.924428901 Solving 3.5 + x = 4.924428901 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = 4.924428901 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = 4.924428901 + -3.5 x = 4.924428901 + -3.5 Combine like terms: 4.924428901 + -3.5 = 1.424428901 x = 1.424428901 Simplifying x = 1.424428901

Subproblem 2

x + 3.5 = -4.924428901 Simplifying x + 3.5 = -4.924428901 Reorder the terms: 3.5 + x = -4.924428901 Solving 3.5 + x = -4.924428901 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = -4.924428901 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = -4.924428901 + -3.5 x = -4.924428901 + -3.5 Combine like terms: -4.924428901 + -3.5 = -8.424428901 x = -8.424428901 Simplifying x = -8.424428901

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.424428901, -8.424428901}

See similar equations:

| 5x+7=5+9x | | Y=2x^3-12x^2+16x | | 4[64-(88-7)]= | | -35+25= | | 13-(5m+3)=4+3m-18 | | 42/(-6)-7= | | x^2+7x+2=80 | | 20w^2-16w+48=0 | | 1-6y+5=3y+15-6 | | 3.5=75 | | ydx+3x-xy+2=0 | | 49x^2-49x+12.25=0 | | 3x+4+8x+4+40=180 | | 1/3x-1/5x=4 | | 4x+10=150 | | 4x-3(2x+1)=3 | | 5/6x=20/3 | | 9*7-4*3+5= | | -6y-12=-33 | | -6y-13=-33 | | x^2-32x+135=0 | | -5b-6-10b-8= | | 0.06x=100 | | 12.4=n+2.8 | | 8[4(n-4)+18]-[3(2n-3)+3]= | | 13n+13= | | 13+13= | | 6+.10=.15+8 | | (24y^7)/(12y^3) | | (17-2*3)-15= | | 9v=5v+8 | | 4(X+7)=5(X+6) |

Equations solver categories