Question Factor the expression (b−1)(b+1) Evaluate b2−1Rewrite the expression in exponential form b2−12Solution (b−1)(b+1) Show Solution Find the roots b1=−1,b2=1 Evaluate b2−1To find the roots of the expression,set the expression equal to 0 b2−1=0Move the constant to the right-hand side and change its sign b2=0+1Removing 0 doesn't change the value,so remove it from the expression b2=1Take the root of both sides of the equation and remember to use both positive and negative roots b=±1Simplify the expression b=±1Separate the equation into 2 possible cases b=1b=−1Solution b1=−1,b2=1 Show Solution
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