Question Simplify the expression −7−a Evaluate 1−1×a−8Multiply the terms 1−a−8Solution −7−a Show Solution Find the roots a=−7 Evaluate 1−1×a−8To find the roots of the expression,set the expression equal to 0 1−1×a−8=0Any expression multiplied by 1 remains the same 1−a−8=0Subtract the numbers −7−a=0Move the constant to the right-hand side and change its sign −a=0+7Removing 0 doesn't change the value,so remove it from the expression −a=7Solution a=−7 Show Solution