-.02x^2+1.2x=10

Simple and best practice solution for -.02x^2+1.2x=10 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 -.02x^2+1.2x=10 equation:


Simplifying
-0.02x2 + 1.2x = 10

Reorder the terms:
1.2x + -0.02x2 = 10

Solving
1.2x + -0.02x2 = 10

Solving for variable 'x'.

Reorder the terms:
-10 + 1.2x + -0.02x2 = 10 + -10

Combine like terms: 10 + -10 = 0
-10 + 1.2x + -0.02x2 = 0

Begin completing the square.  Divide all terms by
-0.02 the coefficient of the squared term: 

Divide each side by '-0.02'.
500 + -60x + x2 = 0

Move the constant term to the right:

Add '-500' to each side of the equation.
500 + -60x + -500 + x2 = 0 + -500

Reorder the terms:
500 + -500 + -60x + x2 = 0 + -500

Combine like terms: 500 + -500 = 0
0 + -60x + x2 = 0 + -500
-60x + x2 = 0 + -500

Combine like terms: 0 + -500 = -500
-60x + x2 = -500

The x term is -60x.  Take half its coefficient (-30).
Square it (900) and add it to both sides.

Add '900' to each side of the equation.
-60x + 900 + x2 = -500 + 900

Reorder the terms:
900 + -60x + x2 = -500 + 900

Combine like terms: -500 + 900 = 400
900 + -60x + x2 = 400

Factor a perfect square on the left side:
(x + -30)(x + -30) = 400

Calculate the square root of the right side: 20

Break this problem into two subproblems by setting 
(x + -30) equal to 20 and -20.

Subproblem 1

x + -30 = 20 Simplifying x + -30 = 20 Reorder the terms: -30 + x = 20 Solving -30 + x = 20 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '30' to each side of the equation. -30 + 30 + x = 20 + 30 Combine like terms: -30 + 30 = 0 0 + x = 20 + 30 x = 20 + 30 Combine like terms: 20 + 30 = 50 x = 50 Simplifying x = 50

Subproblem 2

x + -30 = -20 Simplifying x + -30 = -20 Reorder the terms: -30 + x = -20 Solving -30 + x = -20 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '30' to each side of the equation. -30 + 30 + x = -20 + 30 Combine like terms: -30 + 30 = 0 0 + x = -20 + 30 x = -20 + 30 Combine like terms: -20 + 30 = 10 x = 10 Simplifying x = 10

Solution

The solution to the problem is based on the solutions from the subproblems. x = {50, 10}

See similar equations:

| (1/2)8(3x)= | | 17/6+(-12.76)=n | | 21=x-(-6) | | 1/28(3x)= | | b-7+3b=28 | | t=-.7+(-2.5) | | 11x(2+4y)= | | -(10+3x)=-25 | | ?23=?2a-10+a | | 4-m=5 | | -2(2x-1)=-5+5x | | x-6.4x-1.9=-4.9(x+6) | | 6b-3=8b | | 6m-7-2m=1+5m | | 50+55(x)=2000+45(x) | | 16=m+9 | | -.7+(2.5)= | | 12x-3x=15 | | -14=x+(-8) | | 20=-4(-x+3) | | f(x)=x^3-13x^2+3x-39 | | 8x-8-6w=4w-7 | | -16x^2+80x+0=0 | | 7.5r+6=r(6-7) | | 2n+12-n=60 | | 3(3x-3)-4=3(x-2)+29 | | 1.2x=7.8 | | 1-2x-5+2-3x=7-6x+4 | | 5x-2=2+2x | | 5(y-x)=x+5y | | 63=21+0.35p | | 12=3/4y |

Equations solver categories