Question Factor the expression (s−1)(s+1) Evaluate s2−1Rewrite the expression in exponential form s2−12Solution (s−1)(s+1) Show Solution Find the roots s1=−1,s2=1 Evaluate s2−1To find the roots of the expression,set the expression equal to 0 s2−1=0Move the constant to the right-hand side and change its sign s2=0+1Removing 0 doesn't change the value,so remove it from the expression s2=1Take the root of both sides of the equation and remember to use both positive and negative roots s=±1Simplify the expression s=±1Separate the equation into 2 possible cases s=1s=−1Solution s1=−1,s2=1 Show Solution
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