s^2+s=4

Simple and best practice solution for s^2+s=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 s^2+s=4 equation:


Simplifying
s2 + s = 4

Reorder the terms:
s + s2 = 4

Solving
s + s2 = 4

Solving for variable 's'.

Reorder the terms:
-4 + s + s2 = 4 + -4

Combine like terms: 4 + -4 = 0
-4 + s + s2 = 0

Begin completing the square.

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + s + 4 + s2 = 0 + 4

Reorder the terms:
-4 + 4 + s + s2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + s + s2 = 0 + 4
s + s2 = 0 + 4

Combine like terms: 0 + 4 = 4
s + s2 = 4

The s term is s.  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.
s + 0.25 + s2 = 4 + 0.25

Reorder the terms:
0.25 + s + s2 = 4 + 0.25

Combine like terms: 4 + 0.25 = 4.25
0.25 + s + s2 = 4.25

Factor a perfect square on the left side:
(s + 0.5)(s + 0.5) = 4.25

Calculate the square root of the right side: 2.061552813

Break this problem into two subproblems by setting 
(s + 0.5) equal to 2.061552813 and -2.061552813.

Subproblem 1

s + 0.5 = 2.061552813 Simplifying s + 0.5 = 2.061552813 Reorder the terms: 0.5 + s = 2.061552813 Solving 0.5 + s = 2.061552813 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + s = 2.061552813 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + s = 2.061552813 + -0.5 s = 2.061552813 + -0.5 Combine like terms: 2.061552813 + -0.5 = 1.561552813 s = 1.561552813 Simplifying s = 1.561552813

Subproblem 2

s + 0.5 = -2.061552813 Simplifying s + 0.5 = -2.061552813 Reorder the terms: 0.5 + s = -2.061552813 Solving 0.5 + s = -2.061552813 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + s = -2.061552813 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + s = -2.061552813 + -0.5 s = -2.061552813 + -0.5 Combine like terms: -2.061552813 + -0.5 = -2.561552813 s = -2.561552813 Simplifying s = -2.561552813

Solution

The solution to the problem is based on the solutions from the subproblems. s = {1.561552813, -2.561552813}

See similar equations:

| 5(x+2)+3x+2=30 | | X^2-21x+24=0 | | 6/16=9/x | | -3x-0=-14 | | n/5=4-(-9) | | X-1/10=17/20 | | 2(3x-4)=8x-4-2 | | 8000*x=8888.88 | | 63=7*q | | 68=4(2-3x) | | 0=-4x^2-3x-9 | | 14m-77=35 | | (3x-5)/(x-2)=0 | | (5x^4)-(2x^3)=0 | | 650/10= | | a^2-6a-13=0 | | 16x^2+24x+16=81 | | (4x-3)(7x^2-4x-3)=0 | | (4-w)(3w-8)=0 | | 14x-7y=21 | | 14x-7y=20 | | X^2-16x+63=o | | -5*h=65 | | z/9=y | | 9x+5y+4z-5x+3z-8y= | | y=x^4-6x+9 | | X+(x-10)+2(5x-55)=360 | | 16x-8y=20 | | P=2n-120 | | -6a+4+2a+1=13 | | 8*b=-3 | | (3c-5)(c+5)= |

Equations solver categories