Question Simplify the expression 2a−1 Evaluate a+1×a−1Any expression multiplied by 1 remains the same a+a−1Solution More Steps Evaluate a+aCollect like terms by calculating the sum or difference of their coefficients (1+1)aAdd the numbers 2a 2a−1 Show Solution Find the roots a=21Alternative Form a=0.5 Evaluate a+1×a−1To find the roots of the expression,set the expression equal to 0 a+1×a−1=0Any expression multiplied by 1 remains the same a+a−1=0Add the terms More Steps Evaluate a+aCollect like terms by calculating the sum or difference of their coefficients (1+1)aAdd the numbers 2a 2a−1=0Move the constant to the right-hand side and change its sign 2a=0+1Removing 0 doesn't change the value,so remove it from the expression 2a=1Divide both sides 22a=21Solution a=21Alternative Form a=0.5 Show Solution
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