3x^2+12x-7=14

Simple and best practice solution for 3x^2+12x-7=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 3x^2+12x-7=14 equation:


Simplifying
3x2 + 12x + -7 = 14

Reorder the terms:
-7 + 12x + 3x2 = 14

Solving
-7 + 12x + 3x2 = 14

Solving for variable 'x'.

Reorder the terms:
-7 + -14 + 12x + 3x2 = 14 + -14

Combine like terms: -7 + -14 = -21
-21 + 12x + 3x2 = 14 + -14

Combine like terms: 14 + -14 = 0
-21 + 12x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-7 + 4x + x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-7 + 4x + x2)' equal to zero and attempt to solve: Simplifying -7 + 4x + x2 = 0 Solving -7 + 4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '7' to each side of the equation. -7 + 4x + 7 + x2 = 0 + 7 Reorder the terms: -7 + 7 + 4x + x2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 4x + x2 = 0 + 7 4x + x2 = 0 + 7 Combine like terms: 0 + 7 = 7 4x + x2 = 7 The x term is 4x. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x + 4 + x2 = 7 + 4 Reorder the terms: 4 + 4x + x2 = 7 + 4 Combine like terms: 7 + 4 = 11 4 + 4x + x2 = 11 Factor a perfect square on the left side: (x + 2)(x + 2) = 11 Calculate the square root of the right side: 3.31662479 Break this problem into two subproblems by setting (x + 2) equal to 3.31662479 and -3.31662479.

Subproblem 1

x + 2 = 3.31662479 Simplifying x + 2 = 3.31662479 Reorder the terms: 2 + x = 3.31662479 Solving 2 + x = 3.31662479 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 3.31662479 + -2 Combine like terms: 2 + -2 = 0 0 + x = 3.31662479 + -2 x = 3.31662479 + -2 Combine like terms: 3.31662479 + -2 = 1.31662479 x = 1.31662479 Simplifying x = 1.31662479

Subproblem 2

x + 2 = -3.31662479 Simplifying x + 2 = -3.31662479 Reorder the terms: 2 + x = -3.31662479 Solving 2 + x = -3.31662479 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -3.31662479 + -2 Combine like terms: 2 + -2 = 0 0 + x = -3.31662479 + -2 x = -3.31662479 + -2 Combine like terms: -3.31662479 + -2 = -5.31662479 x = -5.31662479 Simplifying x = -5.31662479

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.31662479, -5.31662479}

Solution

x = {1.31662479, -5.31662479}

See similar equations:

| x-3(1-x)=4-3x-2 | | 2(-3-4y)=10 | | 9x-27+8=-19 | | -9+7+7m-1=7m-3 | | 9/10/1/5 | | x-45=108+10x | | r^2-2r+6=0 | | -49-4x=-10x+53 | | 3m+6m=45 | | 5y=4y+4 | | 4n^2-3=69 | | -51-6x=x+47 | | x+y+4x=16+2x | | 14x-25=9x+6 | | P/-16=19 | | -3x-71=163+10x | | 4x-25=2x+30 | | -2(6)+1=7-5 | | -124-8x=86+2x | | -4(2b+2)+(9b-2)=0 | | -2(2)+1=2-5 | | -4z+4=15z-11 | | -2(-2)+1=-2-5 | | -73-4x=29+2x | | 2.2q-1.4-2.1q=0.9q-5.1 | | 2n^2+3-2n=0 | | R+9=3t-5 | | 20.00+.75x=1.75x | | (x^2+2x+20)/(x+6) | | -6-4x+x=7x+4 | | g+1/2=9/8 | | 4(7-3v)-7v= |

Equations solver categories