Question Simplify the expression 2−a Evaluate 3−a−1Solution 2−a Show Solution Find the roots a=2 Evaluate 3−a−1To find the roots of the expression,set the expression equal to 0 3−a−1=0Subtract the numbers 2−a=0Move the constant to the right-hand side and change its sign −a=0−2Removing 0 doesn't change the value,so remove it from the expression −a=−2Solution a=2 Show Solution
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