s^2-30s+56=25

Simple and best practice solution for s^2-30s+56=25 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^2-30s+56=25 equation:


Simplifying
s2 + -30s + 56 = 25

Reorder the terms:
56 + -30s + s2 = 25

Solving
56 + -30s + s2 = 25

Solving for variable 's'.

Reorder the terms:
56 + -25 + -30s + s2 = 25 + -25

Combine like terms: 56 + -25 = 31
31 + -30s + s2 = 25 + -25

Combine like terms: 25 + -25 = 0
31 + -30s + s2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-31' to each side of the equation.
31 + -30s + -31 + s2 = 0 + -31

Reorder the terms:
31 + -31 + -30s + s2 = 0 + -31

Combine like terms: 31 + -31 = 0
0 + -30s + s2 = 0 + -31
-30s + s2 = 0 + -31

Combine like terms: 0 + -31 = -31
-30s + s2 = -31

The s term is -30s.  Take half its coefficient (-15).
Square it (225) and add it to both sides.

Add '225' to each side of the equation.
-30s + 225 + s2 = -31 + 225

Reorder the terms:
225 + -30s + s2 = -31 + 225

Combine like terms: -31 + 225 = 194
225 + -30s + s2 = 194

Factor a perfect square on the left side:
(s + -15)(s + -15) = 194

Calculate the square root of the right side: 13.928388277

Break this problem into two subproblems by setting 
(s + -15) equal to 13.928388277 and -13.928388277.

Subproblem 1

s + -15 = 13.928388277 Simplifying s + -15 = 13.928388277 Reorder the terms: -15 + s = 13.928388277 Solving -15 + s = 13.928388277 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + s = 13.928388277 + 15 Combine like terms: -15 + 15 = 0 0 + s = 13.928388277 + 15 s = 13.928388277 + 15 Combine like terms: 13.928388277 + 15 = 28.928388277 s = 28.928388277 Simplifying s = 28.928388277

Subproblem 2

s + -15 = -13.928388277 Simplifying s + -15 = -13.928388277 Reorder the terms: -15 + s = -13.928388277 Solving -15 + s = -13.928388277 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + s = -13.928388277 + 15 Combine like terms: -15 + 15 = 0 0 + s = -13.928388277 + 15 s = -13.928388277 + 15 Combine like terms: -13.928388277 + 15 = 1.071611723 s = 1.071611723 Simplifying s = 1.071611723

Solution

The solution to the problem is based on the solutions from the subproblems. s = {28.928388277, 1.071611723}

See similar equations:

| ax+b=49+a | | 2x^2-169=0 | | x^4-6x^3+9x^2=-100 | | 7x-5=2x-3 | | x^2+ax+b=(x^2-49)-a | | x^4-6x^3+9x^2+100=0 | | 2x^2+169=0 | | 7x+35-4x-19=50+x-3x-24 | | -5w(w-2)(w+4)=0 | | 8(b+56)=10b+56 | | (v-2)(v-8)=0 | | 4(y-7)(-y+2)=0 | | -4w(w+7)(w-5)=0 | | (y-9)(y-1)=0 | | 3h+2=20 | | 3z/10-9=1 | | xa+CB=3c | | x/8=48/128 | | XY-15=0 | | XY-25=0 | | 7x+35-4x-19=50+x-3x-25 | | f(-9)=5x+4 | | 3.5/0.07 | | (2)+(2)= | | (d-2)/(d-3)=1/-m | | -2c^2d^3x5/6cd^2 | | (9x-3)(8x+3)=0 | | 28+11x+x^2= | | V-17=14 | | 7/2X-5/3=4/6 | | (1/3)9e | | 3x/4-6/5=6 |

Equations solver categories