3x^2+36x=45

Simple and best practice solution for 3x^2+36x=45 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+36x=45 equation:


Simplifying
3x2 + 36x = 45

Reorder the terms:
36x + 3x2 = 45

Solving
36x + 3x2 = 45

Solving for variable 'x'.

Reorder the terms:
-45 + 36x + 3x2 = 45 + -45

Combine like terms: 45 + -45 = 0
-45 + 36x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-15 + 12x + x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-15 + 12x + x2)' equal to zero and attempt to solve: Simplifying -15 + 12x + x2 = 0 Solving -15 + 12x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '15' to each side of the equation. -15 + 12x + 15 + x2 = 0 + 15 Reorder the terms: -15 + 15 + 12x + x2 = 0 + 15 Combine like terms: -15 + 15 = 0 0 + 12x + x2 = 0 + 15 12x + x2 = 0 + 15 Combine like terms: 0 + 15 = 15 12x + x2 = 15 The x term is 12x. Take half its coefficient (6). Square it (36) and add it to both sides. Add '36' to each side of the equation. 12x + 36 + x2 = 15 + 36 Reorder the terms: 36 + 12x + x2 = 15 + 36 Combine like terms: 15 + 36 = 51 36 + 12x + x2 = 51 Factor a perfect square on the left side: (x + 6)(x + 6) = 51 Calculate the square root of the right side: 7.141428429 Break this problem into two subproblems by setting (x + 6) equal to 7.141428429 and -7.141428429.

Subproblem 1

x + 6 = 7.141428429 Simplifying x + 6 = 7.141428429 Reorder the terms: 6 + x = 7.141428429 Solving 6 + x = 7.141428429 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 7.141428429 + -6 Combine like terms: 6 + -6 = 0 0 + x = 7.141428429 + -6 x = 7.141428429 + -6 Combine like terms: 7.141428429 + -6 = 1.141428429 x = 1.141428429 Simplifying x = 1.141428429

Subproblem 2

x + 6 = -7.141428429 Simplifying x + 6 = -7.141428429 Reorder the terms: 6 + x = -7.141428429 Solving 6 + x = -7.141428429 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -7.141428429 + -6 Combine like terms: 6 + -6 = 0 0 + x = -7.141428429 + -6 x = -7.141428429 + -6 Combine like terms: -7.141428429 + -6 = -13.141428429 x = -13.141428429 Simplifying x = -13.141428429

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.141428429, -13.141428429}

Solution

x = {1.141428429, -13.141428429}

See similar equations:

| 6y=8x+-40 | | 81=3x-4 | | 16=2(2x+x-1) | | 18a/9+12/3-6a/2=30/6 | | (y^2)+2y-8=0 | | -4(-4x+y)=-4(0) | | 20+27-x=x-4 | | 2e^3x=322 | | -0.6(1.2x+4.5)= | | 10x-12=7x+5 | | X/6/7=11/6 | | 2.50xf=20 | | 22/7=5/x | | 4x-9=2x+11 | | 1/4a-1/4=-6 | | 226/12= | | ln(2.5x)=10 | | 4-1/r=9 | | 5x+5-7=18 | | 47x+44x(33x+1)+90+111=360 | | -3m+2=16-m | | 26/12= | | 20=-4(f+6) | | -0.6(1.2x+4.5)-3(2.8x-4)= | | 49-x-1=5x | | 2p=5/8 | | 1.2x+4.5= | | 2x+3-6=11 | | 9x+6=7-(3x-8) | | 2t-10/3t=9 | | 7x+11=5x+33 | | 20/2.50=f |

Equations solver categories