Question Simplify the expression 4−a Evaluate 5−a−1Solution 4−a Show Solution Find the roots a=4 Evaluate 5−a−1To find the roots of the expression,set the expression equal to 0 5−a−1=0Subtract the numbers 4−a=0Move the constant to the right-hand side and change its sign −a=0−4Removing 0 doesn't change the value,so remove it from the expression −a=−4Solution a=4 Show Solution
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