-4.9x^2+20x+60=0

Simple and best practice solution for -4.9x^2+20x+60=0 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 -4.9x^2+20x+60=0 equation:


Simplifying
-4.9x2 + 20x + 60 = 0

Reorder the terms:
60 + 20x + -4.9x2 = 0

Solving
60 + 20x + -4.9x2 = 0

Solving for variable 'x'.

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

Divide each side by '-4.9'.
-12.24489796 + -4.081632653x + x2 = 0

Move the constant term to the right:

Add '12.24489796' to each side of the equation.
-12.24489796 + -4.081632653x + 12.24489796 + x2 = 0 + 12.24489796

Reorder the terms:
-12.24489796 + 12.24489796 + -4.081632653x + x2 = 0 + 12.24489796

Combine like terms: -12.24489796 + 12.24489796 = 0.00000000
0.00000000 + -4.081632653x + x2 = 0 + 12.24489796
-4.081632653x + x2 = 0 + 12.24489796

Combine like terms: 0 + 12.24489796 = 12.24489796
-4.081632653x + x2 = 12.24489796

The x term is -4.081632653x.  Take half its coefficient (-2.040816327).
Square it (4.164931281) and add it to both sides.

Add '4.164931281' to each side of the equation.
-4.081632653x + 4.164931281 + x2 = 12.24489796 + 4.164931281

Reorder the terms:
4.164931281 + -4.081632653x + x2 = 12.24489796 + 4.164931281

Combine like terms: 12.24489796 + 4.164931281 = 16.409829241
4.164931281 + -4.081632653x + x2 = 16.409829241

Factor a perfect square on the left side:
(x + -2.040816327)(x + -2.040816327) = 16.409829241

Calculate the square root of the right side: 4.050904744

Break this problem into two subproblems by setting 
(x + -2.040816327) equal to 4.050904744 and -4.050904744.

Subproblem 1

x + -2.040816327 = 4.050904744 Simplifying x + -2.040816327 = 4.050904744 Reorder the terms: -2.040816327 + x = 4.050904744 Solving -2.040816327 + x = 4.050904744 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.040816327' to each side of the equation. -2.040816327 + 2.040816327 + x = 4.050904744 + 2.040816327 Combine like terms: -2.040816327 + 2.040816327 = 0.000000000 0.000000000 + x = 4.050904744 + 2.040816327 x = 4.050904744 + 2.040816327 Combine like terms: 4.050904744 + 2.040816327 = 6.091721071 x = 6.091721071 Simplifying x = 6.091721071

Subproblem 2

x + -2.040816327 = -4.050904744 Simplifying x + -2.040816327 = -4.050904744 Reorder the terms: -2.040816327 + x = -4.050904744 Solving -2.040816327 + x = -4.050904744 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.040816327' to each side of the equation. -2.040816327 + 2.040816327 + x = -4.050904744 + 2.040816327 Combine like terms: -2.040816327 + 2.040816327 = 0.000000000 0.000000000 + x = -4.050904744 + 2.040816327 x = -4.050904744 + 2.040816327 Combine like terms: -4.050904744 + 2.040816327 = -2.010088417 x = -2.010088417 Simplifying x = -2.010088417

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.091721071, -2.010088417}

See similar equations:

| g-4/4=7/4 | | 6x+2=4k | | 6x^2-31x+18=0 | | 8x^2/4 | | -48/2=2(3xX) | | -(3z+4)=-6z-3(3z+2) | | xa+c=-bd+d | | 5(2-2y)=20 | | ax+c=-bx+d | | 4[n+8]=5 | | 6n-1= | | 5/3m=1/3 | | x=1/2y+11 | | -3n-2n=-15 | | R/8=-3 | | 3ln(3x+5)+5=7 | | y=1/2x+11 | | 3*9-3x=6 | | 2x^2+24x-365=0 | | 2x^2+24x-365=0 | | 1-3x+2x=6 | | 10-(x-10)=3x+52 | | y=5/8x+6 | | 7^2-(5^3/5)-7 | | 7x-8+3x=72 | | 3/10y+y | | -21=120 | | 3/4x+17=23 | | 6x+4-8x=28 | | 5/3r=20 | | 7x+14-9x=18-14x+12x-4 | | 2(4t-3)=34 |

Equations solver categories