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Simplifying s4 + -11s2 + 28 = 0 Reorder the terms: 28 + -11s2 + s4 = 0 Solving 28 + -11s2 + s4 = 0 Solving for variable 's'. Factor a trinomial. (4 + -1s2)(7 + -1s2) = 0 Factor a difference between two squares. ((2 + s)(2 + -1s))(7 + -1s2) = 0Subproblem 1
Set the factor '(7 + -1s2)' equal to zero and attempt to solve: Simplifying 7 + -1s2 = 0 Solving 7 + -1s2 = 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 + -1s2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1s2 = 0 + -7 -1s2 = 0 + -7 Combine like terms: 0 + -7 = -7 -1s2 = -7 Divide each side by '-1'. s2 = 7 Simplifying s2 = 7 Take the square root of each side: s = {-2.645751311, 2.645751311}Subproblem 2
Set the factor '(2 + s)' equal to zero and attempt to solve: Simplifying 2 + s = 0 Solving 2 + s = 0 Move all terms containing s to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + s = 0 + -2 Combine like terms: 2 + -2 = 0 0 + s = 0 + -2 s = 0 + -2 Combine like terms: 0 + -2 = -2 s = -2 Simplifying s = -2Subproblem 3
Set the factor '(2 + -1s)' equal to zero and attempt to solve: Simplifying 2 + -1s = 0 Solving 2 + -1s = 0 Move all terms containing s to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1s = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1s = 0 + -2 -1s = 0 + -2 Combine like terms: 0 + -2 = -2 -1s = -2 Divide each side by '-1'. s = 2 Simplifying s = 2Solution
s = {-2.645751311, 2.645751311, -2, 2}
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