Question Find the roots a=21Alternative Form a=0.5 Evaluate 1−2aTo find the roots of the expression,set the expression equal to 0 1−2a=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=−1Change the signs on both sides of the equation 2a=1Divide both sides 22a=21Solution a=21Alternative Form a=0.5 Show Solution