s^2-3s=28

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Solution for s^2-3s=28 equation:


Simplifying
s2 + -3s = 28

Reorder the terms:
-3s + s2 = 28

Solving
-3s + s2 = 28

Solving for variable 's'.

Reorder the terms:
-28 + -3s + s2 = 28 + -28

Combine like terms: 28 + -28 = 0
-28 + -3s + s2 = 0

Factor a trinomial.
(-4 + -1s)(7 + -1s) = 0

Subproblem 1

Set the factor '(-4 + -1s)' equal to zero and attempt to solve: Simplifying -4 + -1s = 0 Solving -4 + -1s = 0 Move all terms containing s to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1s = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1s = 0 + 4 -1s = 0 + 4 Combine like terms: 0 + 4 = 4 -1s = 4 Divide each side by '-1'. s = -4 Simplifying s = -4

Subproblem 2

Set the factor '(7 + -1s)' equal to zero and attempt to solve: Simplifying 7 + -1s = 0 Solving 7 + -1s = 0 Move all terms containing s to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1s = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1s = 0 + -7 -1s = 0 + -7 Combine like terms: 0 + -7 = -7 -1s = -7 Divide each side by '-1'. s = 7 Simplifying s = 7

Solution

s = {-4, 7}

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