.05s^2+1.1s-78=0

Simple and best practice solution for .05s^2+1.1s-78=0 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 .05s^2+1.1s-78=0 equation:


Simplifying
0.05s2 + 1.1s + -78 = 0

Reorder the terms:
-78 + 1.1s + 0.05s2 = 0

Solving
-78 + 1.1s + 0.05s2 = 0

Solving for variable 's'.

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

Divide each side by '0.05'.
-1560 + 22s + s2 = 0

Move the constant term to the right:

Add '1560' to each side of the equation.
-1560 + 22s + 1560 + s2 = 0 + 1560

Reorder the terms:
-1560 + 1560 + 22s + s2 = 0 + 1560

Combine like terms: -1560 + 1560 = 0
0 + 22s + s2 = 0 + 1560
22s + s2 = 0 + 1560

Combine like terms: 0 + 1560 = 1560
22s + s2 = 1560

The s term is 22s.  Take half its coefficient (11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
22s + 121 + s2 = 1560 + 121

Reorder the terms:
121 + 22s + s2 = 1560 + 121

Combine like terms: 1560 + 121 = 1681
121 + 22s + s2 = 1681

Factor a perfect square on the left side:
(s + 11)(s + 11) = 1681

Calculate the square root of the right side: 41

Break this problem into two subproblems by setting 
(s + 11) equal to 41 and -41.

Subproblem 1

s + 11 = 41 Simplifying s + 11 = 41 Reorder the terms: 11 + s = 41 Solving 11 + s = 41 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + s = 41 + -11 Combine like terms: 11 + -11 = 0 0 + s = 41 + -11 s = 41 + -11 Combine like terms: 41 + -11 = 30 s = 30 Simplifying s = 30

Subproblem 2

s + 11 = -41 Simplifying s + 11 = -41 Reorder the terms: 11 + s = -41 Solving 11 + s = -41 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + s = -41 + -11 Combine like terms: 11 + -11 = 0 0 + s = -41 + -11 s = -41 + -11 Combine like terms: -41 + -11 = -52 s = -52 Simplifying s = -52

Solution

The solution to the problem is based on the solutions from the subproblems. s = {30, -52}

See similar equations:

| x+10+y+3x=70 | | x^2+ax+a-1=0 | | 0.6(x-6)=7.2 | | -8(8)+(9)= | | -8(-8)+(9)= | | -81x+23x=58 | | -8(-8)+(9)=17 | | 10x-11y=82 | | 8(-8)+4(9)=28 | | P^2+8=-2p+8 | | 16x^3+54y^3=0 | | 5(x-2)+3x=54 | | -9(3/4)=x-8(1/3) | | 7x-2=5-13 | | 15=0.3 | | -9/5*-7/3 | | 22=-50x+49x | | g^2-15=54 | | 2x+10+y+6x=69 | | A^2-b^4=0 | | P*(p+2)=3 | | 3(2z-1)-3(5-2z)=9 | | (-3)^4/(-3)^4 | | y=20x^4/5−6x^2/3 | | y=20x4/5−6x2/3 | | z^8/z^12 | | N(120-n)-50n=0 | | (9x+9)(7x^2+9x+9)= | | N^2-70n=0 | | 4(5c+1)-62=13c+5 | | -59x=9x+68 | | 1/2h-2=17 |

Equations solver categories