Question Simplify the expression −405−a Evaluate 821−1226−aSolution −405−a Show Solution Find the roots a=−405 Evaluate 821−1226−aTo find the roots of the expression,set the expression equal to 0 821−1226−a=0Subtract the numbers −405−a=0Move the constant to the right-hand side and change its sign −a=0+405Removing 0 doesn't change the value,so remove it from the expression −a=405Solution a=−405 Show Solution