x^2+3x-336=0

Simple and best practice solution for x^2+3x-336=0 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+3x-336=0 equation:


Simplifying
x2 + 3x + -336 = 0

Reorder the terms:
-336 + 3x + x2 = 0

Solving
-336 + 3x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '336' to each side of the equation.
-336 + 3x + 336 + x2 = 0 + 336

Reorder the terms:
-336 + 336 + 3x + x2 = 0 + 336

Combine like terms: -336 + 336 = 0
0 + 3x + x2 = 0 + 336
3x + x2 = 0 + 336

Combine like terms: 0 + 336 = 336
3x + x2 = 336

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 336 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 336 + 2.25

Combine like terms: 336 + 2.25 = 338.25
2.25 + 3x + x2 = 338.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 338.25

Calculate the square root of the right side: 18.391574158

Break this problem into two subproblems by setting 
(x + 1.5) equal to 18.391574158 and -18.391574158.

Subproblem 1

x + 1.5 = 18.391574158 Simplifying x + 1.5 = 18.391574158 Reorder the terms: 1.5 + x = 18.391574158 Solving 1.5 + x = 18.391574158 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 18.391574158 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 18.391574158 + -1.5 x = 18.391574158 + -1.5 Combine like terms: 18.391574158 + -1.5 = 16.891574158 x = 16.891574158 Simplifying x = 16.891574158

Subproblem 2

x + 1.5 = -18.391574158 Simplifying x + 1.5 = -18.391574158 Reorder the terms: 1.5 + x = -18.391574158 Solving 1.5 + x = -18.391574158 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -18.391574158 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -18.391574158 + -1.5 x = -18.391574158 + -1.5 Combine like terms: -18.391574158 + -1.5 = -19.891574158 x = -19.891574158 Simplifying x = -19.891574158

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.891574158, -19.891574158}

See similar equations:

| -93-(-28)= | | 11w=12w+9 | | 4x^3-7x^2= | | (-24)-27= | | 150=(2/3x•x) | | x*2x*5x=0 | | 6dx=4dy | | 4x(2x-3)(2x+25)=0 | | 2(5c+2)-2c=9+6c+7 | | 75+(45-2x)=90 | | (5x-3)+48=90 | | x-y=-28 | | 1/5c=6.2 | | 4m+2=0 | | 3n+4=42 | | Y=2/3(x-3)^2-4 | | (10x+1)+19=90 | | 9x+14=85 | | 164=2(L+28) | | cos(5x)cos(2x)+sin(5x)sin(2x)=0 | | p/2=-9 | | 6(x+2)-4=48 | | cos(5x)cos(2x)+cos(5x)sin(2x)=0 | | x^3-9x^2+24x-18=0 | | (x+3)squared=49 | | t^2-1/4t-1/64 | | 4(3y-2)=88 | | y^2+y-8=3y | | 9xsquared=4 | | 8s=5.6 | | x-58=4x+23 | | 2x^2+9xy+7y^2= |

Equations solver categories