25=x^2+5x+4

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


Simplifying
25 = x2 + 5x + 4

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

Solving
25 = 4 + 5x + x2

Solving for variable 'x'.

Combine like terms: 25 + -4 = 21
21 + -5x + -1x2 = 4 + 5x + x2 + -4 + -5x + -1x2

Reorder the terms:
21 + -5x + -1x2 = 4 + -4 + 5x + -5x + x2 + -1x2

Combine like terms: 4 + -4 = 0
21 + -5x + -1x2 = 0 + 5x + -5x + x2 + -1x2
21 + -5x + -1x2 = 5x + -5x + x2 + -1x2

Combine like terms: 5x + -5x = 0
21 + -5x + -1x2 = 0 + x2 + -1x2
21 + -5x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
21 + -5x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-21 + 5x + x2 = 0

Move the constant term to the right:

Add '21' to each side of the equation.
-21 + 5x + 21 + x2 = 0 + 21

Reorder the terms:
-21 + 21 + 5x + x2 = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 5x + x2 = 0 + 21
5x + x2 = 0 + 21

Combine like terms: 0 + 21 = 21
5x + x2 = 21

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = 21 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 21 + 6.25

Combine like terms: 21 + 6.25 = 27.25
6.25 + 5x + x2 = 27.25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 27.25

Calculate the square root of the right side: 5.220153254

Break this problem into two subproblems by setting 
(x + 2.5) equal to 5.220153254 and -5.220153254.

Subproblem 1

x + 2.5 = 5.220153254 Simplifying x + 2.5 = 5.220153254 Reorder the terms: 2.5 + x = 5.220153254 Solving 2.5 + x = 5.220153254 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 5.220153254 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 5.220153254 + -2.5 x = 5.220153254 + -2.5 Combine like terms: 5.220153254 + -2.5 = 2.720153254 x = 2.720153254 Simplifying x = 2.720153254

Subproblem 2

x + 2.5 = -5.220153254 Simplifying x + 2.5 = -5.220153254 Reorder the terms: 2.5 + x = -5.220153254 Solving 2.5 + x = -5.220153254 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -5.220153254 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -5.220153254 + -2.5 x = -5.220153254 + -2.5 Combine like terms: -5.220153254 + -2.5 = -7.720153254 x = -7.720153254 Simplifying x = -7.720153254

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.720153254, -7.720153254}

See similar equations:

| 10*3/2 | | 9+3=57 | | 10-8x=-2x+4y | | 147+7X=180 | | m^2+20m+100=7 | | 100-P=2P+25 | | -7x-4=21 | | 2tan^2A+tanA=0 | | n-5n--n= | | a+2b=9 | | 15xy=35000 | | 2tan^2+tan=0 | | -53=y/6 | | 13+x-24=19 | | 2x+5=29+5x | | 12-9w=6-8x | | -v/4=-36 | | (8x-5)(4x-3)=104 | | 1x-12=132 | | 5[x-2]=-40 | | 2[2s-3]=14 | | 1.5x=2.22226x+7 | | 2[x+8]=10 | | 11(-2+3h)= | | 12-5x=28 | | 1/2x-12=132 | | 39=(x+8)(x-2) | | 1-3y=2-4y | | 3c^2+13c+12=0 | | 4x-4=2-3x | | 0=3x^2-3x-216 | | 117=5v+17 |

Equations solver categories