16x^2+x-120=0

Simple and best practice solution for 16x^2+x-120=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 16x^2+x-120=0 equation:


Simplifying
16x2 + x + -120 = 0

Reorder the terms:
-120 + x + 16x2 = 0

Solving
-120 + x + 16x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
16 the coefficient of the squared term: 

Divide each side by '16'.
-7.5 + 0.0625x + x2 = 0

Move the constant term to the right:

Add '7.5' to each side of the equation.
-7.5 + 0.0625x + 7.5 + x2 = 0 + 7.5

Reorder the terms:
-7.5 + 7.5 + 0.0625x + x2 = 0 + 7.5

Combine like terms: -7.5 + 7.5 = 0.0
0.0 + 0.0625x + x2 = 0 + 7.5
0.0625x + x2 = 0 + 7.5

Combine like terms: 0 + 7.5 = 7.5
0.0625x + x2 = 7.5

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.0625x + 0.25 + x2 = 7.5 + 0.25

Reorder the terms:
0.25 + 0.0625x + x2 = 7.5 + 0.25

Combine like terms: 7.5 + 0.25 = 7.75
0.25 + 0.0625x + x2 = 7.75

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 7.75

Calculate the square root of the right side: 2.783882181

Break this problem into two subproblems by setting 
(x + 0.5) equal to 2.783882181 and -2.783882181.

Subproblem 1

x + 0.5 = 2.783882181 Simplifying x + 0.5 = 2.783882181 Reorder the terms: 0.5 + x = 2.783882181 Solving 0.5 + x = 2.783882181 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 2.783882181 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 2.783882181 + -0.5 x = 2.783882181 + -0.5 Combine like terms: 2.783882181 + -0.5 = 2.283882181 x = 2.283882181 Simplifying x = 2.283882181

Subproblem 2

x + 0.5 = -2.783882181 Simplifying x + 0.5 = -2.783882181 Reorder the terms: 0.5 + x = -2.783882181 Solving 0.5 + x = -2.783882181 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -2.783882181 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -2.783882181 + -0.5 x = -2.783882181 + -0.5 Combine like terms: -2.783882181 + -0.5 = -3.283882181 x = -3.283882181 Simplifying x = -3.283882181

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.283882181, -3.283882181}

See similar equations:

| 1000+100+10=30-30+x | | 21-3+30-3+15=x-3+10 | | 32x^2+2x-240=0 | | 3x+2-5x=12-3x | | 3x-3x+x=3-6 | | x^2(2-3x)=0.25 | | -8x-(5x+9)=-6 | | 2560=20(16)(l) | | 46+65=180 | | w^2-2w=-6 | | 21-3+10-3=x | | 2x^2-3x^3=0.25 | | -4X75/6 | | 3(x+3)=2x-8 | | 4x^3+20x^3+24x=0 | | -6x-10=-8-5x | | x-3+30=17-3+6 | | h(t)=-16t^2+144t+144 | | 1/4(28) | | 5/800 | | 18x^6+81x^5-45x^2+63=0 | | x+1+x+2+x+3=117 | | 30-2x+3x-10+15=30 | | Ainf=kma | | 10x=10x+3 | | 20+30+2x-x=30-200+10-3 | | .8m=-.56 | | x=5*9*x | | x+x-x=3+3 | | 64x^2-16x-112=0 | | 3x^4-2x^2+12x^2-8= | | 1+1+1+1+1+1+1+1+1+1+1+1*0+1= |

Equations solver categories