0=4.9x^2+4x-10

Simple and best practice solution for 0=4.9x^2+4x-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 0=4.9x^2+4x-10 equation:


Simplifying
0 = 4.9x2 + 4x + -10

Reorder the terms:
0 = -10 + 4x + 4.9x2

Solving
0 = -10 + 4x + 4.9x2

Solving for variable 'x'.

Combine like terms: 0 + 10 = 10
10 + -4x + -4.9x2 = -10 + 4x + 4.9x2 + 10 + -4x + -4.9x2

Reorder the terms:
10 + -4x + -4.9x2 = -10 + 10 + 4x + -4x + 4.9x2 + -4.9x2

Combine like terms: -10 + 10 = 0
10 + -4x + -4.9x2 = 0 + 4x + -4x + 4.9x2 + -4.9x2
10 + -4x + -4.9x2 = 4x + -4x + 4.9x2 + -4.9x2

Combine like terms: 4x + -4x = 0
10 + -4x + -4.9x2 = 0 + 4.9x2 + -4.9x2
10 + -4x + -4.9x2 = 4.9x2 + -4.9x2

Combine like terms: 4.9x2 + -4.9x2 = 0.0
10 + -4x + -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'.
-2.040816327 + 0.8163265306x + x2 = 0

Move the constant term to the right:

Add '2.040816327' to each side of the equation.
-2.040816327 + 0.8163265306x + 2.040816327 + x2 = 0 + 2.040816327

Reorder the terms:
-2.040816327 + 2.040816327 + 0.8163265306x + x2 = 0 + 2.040816327

Combine like terms: -2.040816327 + 2.040816327 = 0.000000000
0.000000000 + 0.8163265306x + x2 = 0 + 2.040816327
0.8163265306x + x2 = 0 + 2.040816327

Combine like terms: 0 + 2.040816327 = 2.040816327
0.8163265306x + x2 = 2.040816327

The x term is 0.8163265306x.  Take half its coefficient (0.4081632653).
Square it (0.1665972511) and add it to both sides.

Add '0.1665972511' to each side of the equation.
0.8163265306x + 0.1665972511 + x2 = 2.040816327 + 0.1665972511

Reorder the terms:
0.1665972511 + 0.8163265306x + x2 = 2.040816327 + 0.1665972511

Combine like terms: 2.040816327 + 0.1665972511 = 2.2074135781
0.1665972511 + 0.8163265306x + x2 = 2.2074135781

Factor a perfect square on the left side:
(x + 0.4081632653)(x + 0.4081632653) = 2.2074135781

Calculate the square root of the right side: 1.485736712

Break this problem into two subproblems by setting 
(x + 0.4081632653) equal to 1.485736712 and -1.485736712.

Subproblem 1

x + 0.4081632653 = 1.485736712 Simplifying x + 0.4081632653 = 1.485736712 Reorder the terms: 0.4081632653 + x = 1.485736712 Solving 0.4081632653 + x = 1.485736712 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4081632653' to each side of the equation. 0.4081632653 + -0.4081632653 + x = 1.485736712 + -0.4081632653 Combine like terms: 0.4081632653 + -0.4081632653 = 0.0000000000 0.0000000000 + x = 1.485736712 + -0.4081632653 x = 1.485736712 + -0.4081632653 Combine like terms: 1.485736712 + -0.4081632653 = 1.0775734467 x = 1.0775734467 Simplifying x = 1.0775734467

Subproblem 2

x + 0.4081632653 = -1.485736712 Simplifying x + 0.4081632653 = -1.485736712 Reorder the terms: 0.4081632653 + x = -1.485736712 Solving 0.4081632653 + x = -1.485736712 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4081632653' to each side of the equation. 0.4081632653 + -0.4081632653 + x = -1.485736712 + -0.4081632653 Combine like terms: 0.4081632653 + -0.4081632653 = 0.0000000000 0.0000000000 + x = -1.485736712 + -0.4081632653 x = -1.485736712 + -0.4081632653 Combine like terms: -1.485736712 + -0.4081632653 = -1.8938999773 x = -1.8938999773 Simplifying x = -1.8938999773

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.0775734467, -1.8938999773}

See similar equations:

| -6=p-4p | | 7.50x-3.50x+15=95 | | 3(w-8)=-33 | | -.5=cos(pi•t/6) | | 1/x-3/4=x/1 | | 49=6u-17 | | 4l-12=8+5l | | -4t-3t=28 | | 5+0.65p=12.3 | | 3y=-2x-8 | | 3(x+5)=6x-21 | | 23+82= | | 42=-2t+9t | | 7/6multiply3/5 | | 4(w+2)=8 | | 28=-4+8x | | 6x-6y/-5z | | 6=5b+1 | | (2q+4)(3q+1)= | | 16x^4+26x^2+3=0 | | 690/a | | 1=d/4 | | X+.75x=65 | | 5cos^2x-cosx+3=0 | | -36-12x=48 | | 3-(5x+7)=17-8x | | 3(x+45)=2(x+40)+(2x) | | -6-9x+1=7x | | -2y+4x=-4 | | 4x-3(4x+21)=-143 | | -6-9+1=7x | | 4(d+50)=114 |

Equations solver categories