Question Factor the expression (1−y)(1+y) Evaluate 1−y2Rewrite the expression in exponential form 12−y2Solution (1−y)(1+y) Show Solution Find the roots y1=−1,y2=1 Evaluate 1−y2To find the roots of the expression,set the expression equal to 0 1−y2=0Move the constant to the right-hand side and change its sign −y2=0−1Removing 0 doesn't change the value,so remove it from the expression −y2=−1Change the signs on both sides of the equation y2=1Take the root of both sides of the equation and remember to use both positive and negative roots y=±1Simplify the expression y=±1Separate the equation into 2 possible cases y=1y=−1Solution y1=−1,y2=1 Show Solution
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