10x^2-33x-15=0

Simple and best practice solution for 10x^2-33x-15=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 10x^2-33x-15=0 equation:


Simplifying
10x2 + -33x + -15 = 0

Reorder the terms:
-15 + -33x + 10x2 = 0

Solving
-15 + -33x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
-1.5 + -3.3x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -3.3x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -3.3x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -3.3x + x2 = 0 + 1.5
-3.3x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-3.3x + x2 = 1.5

The x term is -3.3x.  Take half its coefficient (-1.65).
Square it (2.7225) and add it to both sides.

Add '2.7225' to each side of the equation.
-3.3x + 2.7225 + x2 = 1.5 + 2.7225

Reorder the terms:
2.7225 + -3.3x + x2 = 1.5 + 2.7225

Combine like terms: 1.5 + 2.7225 = 4.2225
2.7225 + -3.3x + x2 = 4.2225

Factor a perfect square on the left side:
(x + -1.65)(x + -1.65) = 4.2225

Calculate the square root of the right side: 2.054872259

Break this problem into two subproblems by setting 
(x + -1.65) equal to 2.054872259 and -2.054872259.

Subproblem 1

x + -1.65 = 2.054872259 Simplifying x + -1.65 = 2.054872259 Reorder the terms: -1.65 + x = 2.054872259 Solving -1.65 + x = 2.054872259 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.65' to each side of the equation. -1.65 + 1.65 + x = 2.054872259 + 1.65 Combine like terms: -1.65 + 1.65 = 0.00 0.00 + x = 2.054872259 + 1.65 x = 2.054872259 + 1.65 Combine like terms: 2.054872259 + 1.65 = 3.704872259 x = 3.704872259 Simplifying x = 3.704872259

Subproblem 2

x + -1.65 = -2.054872259 Simplifying x + -1.65 = -2.054872259 Reorder the terms: -1.65 + x = -2.054872259 Solving -1.65 + x = -2.054872259 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.65' to each side of the equation. -1.65 + 1.65 + x = -2.054872259 + 1.65 Combine like terms: -1.65 + 1.65 = 0.00 0.00 + x = -2.054872259 + 1.65 x = -2.054872259 + 1.65 Combine like terms: -2.054872259 + 1.65 = -0.404872259 x = -0.404872259 Simplifying x = -0.404872259

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.704872259, -0.404872259}

See similar equations:

| (D^2-5D-6)y=6x^2 | | 9x-1=13x | | 3/2X+8=-X+26 | | 3x*x+20=12 | | 3x*x+20+12=0 | | 6w^2+17w+5=0 | | 1/4a+5/8a=1/2 | | 6(4x-3)+5(4x-2)=60-20(2-x) | | x+-5=-22 | | 15a+3=3 | | 6+0.5x=y | | -2x+4=8x+2 | | 40y=-x^2+31x+32 | | 10X+3=6X+4 | | 4x=7.8-34 | | n+-45=19 | | 4y=7.1-34 | | 9x^2-7=11 | | 2y-42+y=6 | | 4x-14+2x+8=180 | | e/14+6=4 | | 5x+126=13x-10 | | z=15n | | A^2+6x+8=0 | | (x^2)+(.000018x)-(.00000288)=0 | | x(3x-12)=0 | | X/2+5/12=5/6 | | ax^2+4x+a=0 | | y+-14=-1 | | 156=2x+7/8x+7/8x | | t+-6=18 | | 107-5x=22x+17 |

Equations solver categories