s^2-7s+15=0

Solution for s^2-7s+15=0 equation:

Simplifying
s2 + -7s + 15 = 0

Reorder the terms:
15 + -7s + s2 = 0

Solving
15 + -7s + s2 = 0

Solving for variable 's'.

Begin completing the square.

Move the constant term to the right:

Add '-15' to each side of the equation.
15 + -7s + -15 + s2 = 0 + -15

Reorder the terms:
15 + -15 + -7s + s2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -7s + s2 = 0 + -15
-7s + s2 = 0 + -15

Combine like terms: 0 + -15 = -15
-7s + s2 = -15

The s term is -7s.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7s + 12.25 + s2 = -15 + 12.25

Reorder the terms:
12.25 + -7s + s2 = -15 + 12.25

Combine like terms: -15 + 12.25 = -2.75
12.25 + -7s + s2 = -2.75

Factor a perfect square on the left side:
(s + -3.5)(s + -3.5) = -2.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.