2=10+4.9x-4.9x^2

Simple and best practice solution for 2=10+4.9x-4.9x^2 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 2=10+4.9x-4.9x^2 equation:


Simplifying
2 = 10 + 4.9x + -4.9x2

Solving
2 = 10 + 4.9x + -4.9x2

Solving for variable 'x'.

Combine like terms: 2 + -10 = -8
-8 + -4.9x + 4.9x2 = 10 + 4.9x + -4.9x2 + -10 + -4.9x + 4.9x2

Reorder the terms:
-8 + -4.9x + 4.9x2 = 10 + -10 + 4.9x + -4.9x + -4.9x2 + 4.9x2

Combine like terms: 10 + -10 = 0
-8 + -4.9x + 4.9x2 = 0 + 4.9x + -4.9x + -4.9x2 + 4.9x2
-8 + -4.9x + 4.9x2 = 4.9x + -4.9x + -4.9x2 + 4.9x2

Combine like terms: 4.9x + -4.9x = 0.0
-8 + -4.9x + 4.9x2 = 0.0 + -4.9x2 + 4.9x2
-8 + -4.9x + 4.9x2 = -4.9x2 + 4.9x2

Combine like terms: -4.9x2 + 4.9x2 = 0.0
-8 + -4.9x + 4.9x2 = 0.0

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

Divide each side by '4.9'.
-1.632653061 + -1x + x2 = 0

Move the constant term to the right:

Add '1.632653061' to each side of the equation.
-1.632653061 + -1x + 1.632653061 + x2 = 0 + 1.632653061

Reorder the terms:
-1.632653061 + 1.632653061 + -1x + x2 = 0 + 1.632653061

Combine like terms: -1.632653061 + 1.632653061 = 0.000000000
0.000000000 + -1x + x2 = 0 + 1.632653061
-1x + x2 = 0 + 1.632653061

Combine like terms: 0 + 1.632653061 = 1.632653061
-1x + x2 = 1.632653061

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 1.632653061 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 1.632653061 + 0.25

Combine like terms: 1.632653061 + 0.25 = 1.882653061
0.25 + -1x + x2 = 1.882653061

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 1.882653061

Calculate the square root of the right side: 1.372098051

Break this problem into two subproblems by setting 
(x + -0.5) equal to 1.372098051 and -1.372098051.

Subproblem 1

x + -0.5 = 1.372098051 Simplifying x + -0.5 = 1.372098051 Reorder the terms: -0.5 + x = 1.372098051 Solving -0.5 + x = 1.372098051 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 1.372098051 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.372098051 + 0.5 x = 1.372098051 + 0.5 Combine like terms: 1.372098051 + 0.5 = 1.872098051 x = 1.872098051 Simplifying x = 1.872098051

Subproblem 2

x + -0.5 = -1.372098051 Simplifying x + -0.5 = -1.372098051 Reorder the terms: -0.5 + x = -1.372098051 Solving -0.5 + x = -1.372098051 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -1.372098051 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.372098051 + 0.5 x = -1.372098051 + 0.5 Combine like terms: -1.372098051 + 0.5 = -0.872098051 x = -0.872098051 Simplifying x = -0.872098051

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.872098051, -0.872098051}

See similar equations:

| 5x-y-24=0 | | -1/3-3/5x=1/4 | | 7(4x-10)=14(2x-5) | | 6.4x+2.8y=44.4 | | 20+x+4x=73 | | 360x-2x^2=100 | | 2h+12=-4 | | p^2+7p+15= | | x+(x-6)+2x=74 | | (y-3)(y^2-6y+7)= | | 7r^2(3r^2-2r-5)= | | -2(x)=-3x^3-2 | | -7x-1=6x+64 | | 11z+9-3z=-7 | | -3x^3+6m^2+45m=0 | | 35=-5+2x+-7x | | 2(y-6)+20=-4 | | 3x-(x-8)=0 | | ln(3x-2)+ln(x-1)=2ln(x) | | 4r^2+3r-5=0 | | Pc(c-11)+10(5c-3)=3c(c+5)+c(6c-3)-30 | | -8-17n=-14n-6n+31 | | 14x+5=-1 | | (X(2+6i))(X(2-6i))= | | 6.4x+2.8y=2.8y | | y^2+14y+45= | | x^2-10=83 | | 10x+3=-1+11x | | 90+5x=20x-15 | | ln(-2y+5)-ln(y+4)=ln(-11y-2) | | 3.6=2.3x+7.8 | | 700+8x=-34 |

Equations solver categories