3x(x-2)=-1.5

Simple and best practice solution for 3x(x-2)=-1.5 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(x-2)=-1.5 equation:


Simplifying
3x(x + -2) = -1.5

Reorder the terms:
3x(-2 + x) = -1.5
(-2 * 3x + x * 3x) = -1.5
(-6x + 3x2) = -1.5

Solving
-6x + 3x2 = -1.5

Solving for variable 'x'.

Reorder the terms:
1.5 + -6x + 3x2 = -1.5 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
1.5 + -6x + 3x2 = 0.0

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

Divide each side by '3'.
0.5 + -2x + x2 = 0.0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + -2x + -0.5 + x2 = 0.0 + -0.5

Reorder the terms:
0.5 + -0.5 + -2x + x2 = 0.0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + -2x + x2 = 0.0 + -0.5
-2x + x2 = 0.0 + -0.5

Combine like terms: 0.0 + -0.5 = -0.5
-2x + x2 = -0.5

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -0.5 + 1

Reorder the terms:
1 + -2x + x2 = -0.5 + 1

Combine like terms: -0.5 + 1 = 0.5
1 + -2x + x2 = 0.5

Factor a perfect square on the left side:
(x + -1)(x + -1) = 0.5

Calculate the square root of the right side: 0.707106781

Break this problem into two subproblems by setting 
(x + -1) equal to 0.707106781 and -0.707106781.

Subproblem 1

x + -1 = 0.707106781 Simplifying x + -1 = 0.707106781 Reorder the terms: -1 + x = 0.707106781 Solving -1 + x = 0.707106781 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 0.707106781 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0.707106781 + 1 x = 0.707106781 + 1 Combine like terms: 0.707106781 + 1 = 1.707106781 x = 1.707106781 Simplifying x = 1.707106781

Subproblem 2

x + -1 = -0.707106781 Simplifying x + -1 = -0.707106781 Reorder the terms: -1 + x = -0.707106781 Solving -1 + x = -0.707106781 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -0.707106781 + 1 Combine like terms: -1 + 1 = 0 0 + x = -0.707106781 + 1 x = -0.707106781 + 1 Combine like terms: -0.707106781 + 1 = 0.292893219 x = 0.292893219 Simplifying x = 0.292893219

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.707106781, 0.292893219}

See similar equations:

| 13b+7b= | | 4w+2=4w+7 | | 2x+8-3=11+11+11 | | w*3=7 | | 29r+4=28+1r | | (w/(2w-3))=4/w | | 4x^2+24x+4y^2+4y-363=0 | | 6x-39=3x+42+11x | | 5.98t=1.4t-13.53 | | 2r(x-3)=15 | | a=6-2b | | 6x+9-8(x+1)=3x+5 | | -2=-(n-a) | | x*4=15 | | 5x+13=5(2+2x)-8x | | (x+3)2=-3+k | | (3u+2)(7+u)=0 | | 7(y+6)+7y=9 | | 29x^2-24x-1.44=0 | | 4(x+1.48)=3x | | 5w+3w=20 | | 3y-5=12 | | .3x^2-.7x-4.0=0 | | 15+3m=7m+3 | | -2.29x^2-.24x-.0144=0 | | 32x+17y=196 | | S-1.8x=6.4 | | x^2+12x+100=y | | -6(6x+2)=4x-12 | | (2x-1)(x+3)=15 | | -4(t+1)-t-14=-5(t+5)+7 | | 3x(6+x)=24 |

Equations solver categories