20x^2+4=25x^2+5x

Simple and best practice solution for 20x^2+4=25x^2+5x 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 20x^2+4=25x^2+5x equation:


Simplifying
20x2 + 4 = 25x2 + 5x

Reorder the terms:
4 + 20x2 = 25x2 + 5x

Reorder the terms:
4 + 20x2 = 5x + 25x2

Solving
4 + 20x2 = 5x + 25x2

Solving for variable 'x'.

Reorder the terms:
4 + -5x + 20x2 + -25x2 = 5x + 25x2 + -5x + -25x2

Combine like terms: 20x2 + -25x2 = -5x2
4 + -5x + -5x2 = 5x + 25x2 + -5x + -25x2

Reorder the terms:
4 + -5x + -5x2 = 5x + -5x + 25x2 + -25x2

Combine like terms: 5x + -5x = 0
4 + -5x + -5x2 = 0 + 25x2 + -25x2
4 + -5x + -5x2 = 25x2 + -25x2

Combine like terms: 25x2 + -25x2 = 0
4 + -5x + -5x2 = 0

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
-0.8 + x + x2 = 0

Move the constant term to the right:

Add '0.8' to each side of the equation.
-0.8 + x + 0.8 + x2 = 0 + 0.8

Reorder the terms:
-0.8 + 0.8 + x + x2 = 0 + 0.8

Combine like terms: -0.8 + 0.8 = 0.0
0.0 + x + x2 = 0 + 0.8
x + x2 = 0 + 0.8

Combine like terms: 0 + 0.8 = 0.8
x + x2 = 0.8

The x term is x.  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.
 + 0.25 + x2 = 0.8 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 0.8 + 0.25

Combine like terms: 0.8 + 0.25 = 1.05
1.25 + x2 = 1.05

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 1.05

Calculate the square root of the right side: 1.024695077

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.024695077 and -1.024695077.

Subproblem 1

x + 0.5 = 1.024695077 Simplifying x + 0.5 = 1.024695077 Reorder the terms: 0.5 + x = 1.024695077 Solving 0.5 + x = 1.024695077 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 = 1.024695077 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.024695077 + -0.5 x = 1.024695077 + -0.5 Combine like terms: 1.024695077 + -0.5 = 0.524695077 x = 0.524695077 Simplifying x = 0.524695077

Subproblem 2

x + 0.5 = -1.024695077 Simplifying x + 0.5 = -1.024695077 Reorder the terms: 0.5 + x = -1.024695077 Solving 0.5 + x = -1.024695077 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 = -1.024695077 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.024695077 + -0.5 x = -1.024695077 + -0.5 Combine like terms: -1.024695077 + -0.5 = -1.524695077 x = -1.524695077 Simplifying x = -1.524695077

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.524695077, -1.524695077}

See similar equations:

| y=-0.3-2.9 | | -42=4.5+p | | a+6a=35 | | 4x+5-10x=11+2x+18 | | 126(4b)=56(9) | | -19-14d+21d=4 | | -12x^2+282x-1110=0 | | 8c+5=c-11 | | 6x^2=-72 | | 2x=y+25 | | y-5=-19 | | 2y/7=y-2/15 | | 6x-4+7x+3= | | x-11+5x=9x+13-5x | | -6(1-5n)+3n=38+1n | | P=12+12+12 | | -13w=-140 | | 3x+7+6x=15+9x-8 | | x=10/28 | | -12+3x-27=18 | | 5x+3y-8x+5y= | | 5-n=3m+10 | | w-3(w+5)=-w | | 10x+7=13x-11 | | 7y^6(y^2-5y)+6y^8= | | x=5/14 | | 7x^2-28x-224=0 | | 41=-5+c | | S=200+21 | | -5=-8+4 | | 53/8+4+121/8 | | (5y^4)(2y^6)= |

Equations solver categories