=-0.04x^2+5.8x+4.9

Simple and best practice solution for =-0.04x^2+5.8x+4.9 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 =-0.04x^2+5.8x+4.9 equation:


Simplifying
0 = -0.04x2 + 5.8x + 4.9

Reorder the terms:
0 = 4.9 + 5.8x + -0.04x2

Solving
0 = 4.9 + 5.8x + -0.04x2

Solving for variable 'x'.

Combine like terms: 0 + -4.9 = -4.9
-4.9 + -5.8x + 0.04x2 = 4.9 + 5.8x + -0.04x2 + -4.9 + -5.8x + 0.04x2

Reorder the terms:
-4.9 + -5.8x + 0.04x2 = 4.9 + -4.9 + 5.8x + -5.8x + -0.04x2 + 0.04x2

Combine like terms: 4.9 + -4.9 = 0.0
-4.9 + -5.8x + 0.04x2 = 0.0 + 5.8x + -5.8x + -0.04x2 + 0.04x2
-4.9 + -5.8x + 0.04x2 = 5.8x + -5.8x + -0.04x2 + 0.04x2

Combine like terms: 5.8x + -5.8x = 0.0
-4.9 + -5.8x + 0.04x2 = 0.0 + -0.04x2 + 0.04x2
-4.9 + -5.8x + 0.04x2 = -0.04x2 + 0.04x2

Combine like terms: -0.04x2 + 0.04x2 = 0.00
-4.9 + -5.8x + 0.04x2 = 0.00

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

Divide each side by '0.04'.
-122.5 + -145x + x2 = 0

Move the constant term to the right:

Add '122.5' to each side of the equation.
-122.5 + -145x + 122.5 + x2 = 0 + 122.5

Reorder the terms:
-122.5 + 122.5 + -145x + x2 = 0 + 122.5

Combine like terms: -122.5 + 122.5 = 0.0
0.0 + -145x + x2 = 0 + 122.5
-145x + x2 = 0 + 122.5

Combine like terms: 0 + 122.5 = 122.5
-145x + x2 = 122.5

The x term is -145x.  Take half its coefficient (-72.5).
Square it (5256.25) and add it to both sides.

Add '5256.25' to each side of the equation.
-145x + 5256.25 + x2 = 122.5 + 5256.25

Reorder the terms:
5256.25 + -145x + x2 = 122.5 + 5256.25

Combine like terms: 122.5 + 5256.25 = 5378.75
5256.25 + -145x + x2 = 5378.75

Factor a perfect square on the left side:
(x + -72.5)(x + -72.5) = 5378.75

Calculate the square root of the right side: 73.339961822

Break this problem into two subproblems by setting 
(x + -72.5) equal to 73.339961822 and -73.339961822.

Subproblem 1

x + -72.5 = 73.339961822 Simplifying x + -72.5 = 73.339961822 Reorder the terms: -72.5 + x = 73.339961822 Solving -72.5 + x = 73.339961822 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '72.5' to each side of the equation. -72.5 + 72.5 + x = 73.339961822 + 72.5 Combine like terms: -72.5 + 72.5 = 0.0 0.0 + x = 73.339961822 + 72.5 x = 73.339961822 + 72.5 Combine like terms: 73.339961822 + 72.5 = 145.839961822 x = 145.839961822 Simplifying x = 145.839961822

Subproblem 2

x + -72.5 = -73.339961822 Simplifying x + -72.5 = -73.339961822 Reorder the terms: -72.5 + x = -73.339961822 Solving -72.5 + x = -73.339961822 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '72.5' to each side of the equation. -72.5 + 72.5 + x = -73.339961822 + 72.5 Combine like terms: -72.5 + 72.5 = 0.0 0.0 + x = -73.339961822 + 72.5 x = -73.339961822 + 72.5 Combine like terms: -73.339961822 + 72.5 = -0.839961822 x = -0.839961822 Simplifying x = -0.839961822

Solution

The solution to the problem is based on the solutions from the subproblems. x = {145.839961822, -0.839961822}

See similar equations:

| 5n=2(4+3n) | | z^3-27=0 | | 4v^2+8v+3=0 | | 4x*83x= | | 300+30(400/x) | | (-x)/9=25 | | 10+8*90/9-4 | | 4m+19=5m+12 | | 2(s+2t)s= | | -3+5(x-7)=11-2x | | (x-4x)(3x+2x)= | | f(x)=3x | | 10+(8*90)/9-4 | | 0.30(24)+0.05x=0.15(18+x) | | y=-171+28x+-1x^2 | | 30(2/y) | | -x/5+10=16 | | 37/12-34/12 | | 100k^2-49=0 | | n-(-12)=0 | | -8x=6x | | 30(400/x) | | 2x+5/30=4-2x/12 | | 28.25=2.50(11)+b | | 12m+13=25 | | 6+7x=-64 | | -6(1+8k)-8k=-6-8k | | 3x*2=5x+12 | | x/5-34=-47 | | 24x^2-34x+12=0 | | x+3.4=9.2 | | 36/9+48-10/2 |

Equations solver categories