2x^2+15x-450=0

Simple and best practice solution for 2x^2+15x-450=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 2x^2+15x-450=0 equation:


Simplifying
2x2 + 15x + -450 = 0

Reorder the terms:
-450 + 15x + 2x2 = 0

Solving
-450 + 15x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-225 + 7.5x + x2 = 0

Move the constant term to the right:

Add '225' to each side of the equation.
-225 + 7.5x + 225 + x2 = 0 + 225

Reorder the terms:
-225 + 225 + 7.5x + x2 = 0 + 225

Combine like terms: -225 + 225 = 0
0 + 7.5x + x2 = 0 + 225
7.5x + x2 = 0 + 225

Combine like terms: 0 + 225 = 225
7.5x + x2 = 225

The x term is 7.5x.  Take half its coefficient (3.75).
Square it (14.0625) and add it to both sides.

Add '14.0625' to each side of the equation.
7.5x + 14.0625 + x2 = 225 + 14.0625

Reorder the terms:
14.0625 + 7.5x + x2 = 225 + 14.0625

Combine like terms: 225 + 14.0625 = 239.0625
14.0625 + 7.5x + x2 = 239.0625

Factor a perfect square on the left side:
(x + 3.75)(x + 3.75) = 239.0625

Calculate the square root of the right side: 15.461646096

Break this problem into two subproblems by setting 
(x + 3.75) equal to 15.461646096 and -15.461646096.

Subproblem 1

x + 3.75 = 15.461646096 Simplifying x + 3.75 = 15.461646096 Reorder the terms: 3.75 + x = 15.461646096 Solving 3.75 + x = 15.461646096 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.75' to each side of the equation. 3.75 + -3.75 + x = 15.461646096 + -3.75 Combine like terms: 3.75 + -3.75 = 0.00 0.00 + x = 15.461646096 + -3.75 x = 15.461646096 + -3.75 Combine like terms: 15.461646096 + -3.75 = 11.711646096 x = 11.711646096 Simplifying x = 11.711646096

Subproblem 2

x + 3.75 = -15.461646096 Simplifying x + 3.75 = -15.461646096 Reorder the terms: 3.75 + x = -15.461646096 Solving 3.75 + x = -15.461646096 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.75' to each side of the equation. 3.75 + -3.75 + x = -15.461646096 + -3.75 Combine like terms: 3.75 + -3.75 = 0.00 0.00 + x = -15.461646096 + -3.75 x = -15.461646096 + -3.75 Combine like terms: -15.461646096 + -3.75 = -19.211646096 x = -19.211646096 Simplifying x = -19.211646096

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.711646096, -19.211646096}

See similar equations:

| 3(w+9)=-12 | | 16-6j=10-5j | | 1+10m=-49 | | 5h-7=-6h-29 | | 12g-26=10g | | 2x^2+50x-450=0 | | 4f+1=12+5f | | 5e-7=2e+2 | | 5d+20=10d-45 | | 14-3q=8 | | 126=6p+6 | | 4ax(3-y)=4axy-5 | | 4cm+11cm=12.5cm | | 85*3.95-0.05(85*3.95)= | | 3(z-11)=15 | | 3x^4-9x^2+6=0 | | -2y=-3-5x | | 10-4(9+7)=2(1-p) | | -6x-5(-4+7x)=-8x-13 | | x+xy+y=32 | | 2-9w=4(15-w) | | 35+11=y | | 4w^2+70w+250-250=w | | A^2+24=-1 | | 32*X+2=10 | | 35+11+y=180 | | X=-2x^2+2x | | 0=-2(t+16) | | 4x^2+2x-14=26-25x | | -9=-9+mysolve | | 3X+9y=19 | | 2(3x-4)=4(5x+2) |

Equations solver categories