Question Factor the expression (u−1)(u+1) Evaluate u2−1Rewrite the expression in exponential form u2−12Solution (u−1)(u+1) Show Solution Find the roots u1=−1,u2=1 Evaluate u2−1To find the roots of the expression,set the expression equal to 0 u2−1=0Move the constant to the right-hand side and change its sign u2=0+1Removing 0 doesn't change the value,so remove it from the expression u2=1Take the root of both sides of the equation and remember to use both positive and negative roots u=±1Simplify the expression u=±1Separate the equation into 2 possible cases u=1u=−1Solution u1=−1,u2=1 Show Solution
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