0=-1.5x^2+75x+20

Simple and best practice solution for 0=-1.5x^2+75x+20 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 0=-1.5x^2+75x+20 equation:


Simplifying
0 = -1.5x2 + 75x + 20

Reorder the terms:
0 = 20 + 75x + -1.5x2

Solving
0 = 20 + 75x + -1.5x2

Solving for variable 'x'.

Combine like terms: 0 + -20 = -20
-20 + -75x + 1.5x2 = 20 + 75x + -1.5x2 + -20 + -75x + 1.5x2

Reorder the terms:
-20 + -75x + 1.5x2 = 20 + -20 + 75x + -75x + -1.5x2 + 1.5x2

Combine like terms: 20 + -20 = 0
-20 + -75x + 1.5x2 = 0 + 75x + -75x + -1.5x2 + 1.5x2
-20 + -75x + 1.5x2 = 75x + -75x + -1.5x2 + 1.5x2

Combine like terms: 75x + -75x = 0
-20 + -75x + 1.5x2 = 0 + -1.5x2 + 1.5x2
-20 + -75x + 1.5x2 = -1.5x2 + 1.5x2

Combine like terms: -1.5x2 + 1.5x2 = 0.0
-20 + -75x + 1.5x2 = 0.0

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

Divide each side by '1.5'.
-13.33333333 + -50x + x2 = 0

Move the constant term to the right:

Add '13.33333333' to each side of the equation.
-13.33333333 + -50x + 13.33333333 + x2 = 0 + 13.33333333

Reorder the terms:
-13.33333333 + 13.33333333 + -50x + x2 = 0 + 13.33333333

Combine like terms: -13.33333333 + 13.33333333 = 0.00000000
0.00000000 + -50x + x2 = 0 + 13.33333333
-50x + x2 = 0 + 13.33333333

Combine like terms: 0 + 13.33333333 = 13.33333333
-50x + x2 = 13.33333333

The x term is -50x.  Take half its coefficient (-25).
Square it (625) and add it to both sides.

Add '625' to each side of the equation.
-50x + 625 + x2 = 13.33333333 + 625

Reorder the terms:
625 + -50x + x2 = 13.33333333 + 625

Combine like terms: 13.33333333 + 625 = 638.33333333
625 + -50x + x2 = 638.33333333

Factor a perfect square on the left side:
(x + -25)(x + -25) = 638.33333333

Calculate the square root of the right side: 25.265259415

Break this problem into two subproblems by setting 
(x + -25) equal to 25.265259415 and -25.265259415.

Subproblem 1

x + -25 = 25.265259415 Simplifying x + -25 = 25.265259415 Reorder the terms: -25 + x = 25.265259415 Solving -25 + x = 25.265259415 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + x = 25.265259415 + 25 Combine like terms: -25 + 25 = 0 0 + x = 25.265259415 + 25 x = 25.265259415 + 25 Combine like terms: 25.265259415 + 25 = 50.265259415 x = 50.265259415 Simplifying x = 50.265259415

Subproblem 2

x + -25 = -25.265259415 Simplifying x + -25 = -25.265259415 Reorder the terms: -25 + x = -25.265259415 Solving -25 + x = -25.265259415 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + x = -25.265259415 + 25 Combine like terms: -25 + 25 = 0 0 + x = -25.265259415 + 25 x = -25.265259415 + 25 Combine like terms: -25.265259415 + 25 = -0.265259415 x = -0.265259415 Simplifying x = -0.265259415

Solution

The solution to the problem is based on the solutions from the subproblems. x = {50.265259415, -0.265259415}

See similar equations:

| X^2-16xy+45y^2=0 | | (x-9)2=9 | | -3x+(-5)+x=2x+(-3) | | 0.4q-0.03+.2q=0.7+q | | 9=1-2r-2 | | 6x+2x=45 | | 6x+15(2-x)=15 | | 3(r+2)=-1(-2-4) | | 6n+20=80 | | 4x+3-9x= | | 6-5(x-1)+2x= | | 12x+4x=90 | | 660+6b=108 | | 23x+25=48 | | 5g-11=6(2g-10) | | .80(x)=60 | | 2y+3x=-10 | | (x+3-3i)(x+3+3i)(x+1)(x-2)=0 | | 9n+10=55 | | 4x-8=90 | | (x+3-3i)(x+3+3i)(x+1)(x-2)= | | 6y(y^2-6)+5(6-y^2)=0 | | 9n-5n= | | 0.50(p+5)=9 | | -8(2h-9)=20-12h | | 7n+20=41 | | 3(4x-2x)=18 | | -29=k-18 | | 17h-9(h+4)=3h-26 | | 11n+12=67 | | 3x^1-18x-5=0 | | 6-6c=-2(c+5) |

Equations solver categories