Question Factor the expression (n−1)(n+1) Evaluate n2−1Rewrite the expression in exponential form n2−12Solution (n−1)(n+1) Show Solution Find the roots n1=−1,n2=1 Evaluate n2−1To find the roots of the expression,set the expression equal to 0 n2−1=0Move the constant to the right-hand side and change its sign n2=0+1Removing 0 doesn't change the value,so remove it from the expression n2=1Take the root of both sides of the equation and remember to use both positive and negative roots n=±1Simplify the expression n=±1Separate the equation into 2 possible cases n=1n=−1Solution n1=−1,n2=1 Show Solution
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