Question Simplify the expression 57−a Evaluate 157−aSolution 57−a Show Solution Find the roots a=57 Evaluate 157−aTo find the roots of the expression,set the expression equal to 0 157−a=0Divide the terms 57−a=0Move the constant to the right-hand side and change its sign −a=0−57Removing 0 doesn't change the value,so remove it from the expression −a=−57Solution a=57 Show Solution
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