Question Simplify the expression x4−1 Evaluate (x×1)4−1Solution x4−1 Show Solution Factor the expression (x−1)(x+1)(x2+1) Evaluate (x×1)4−1Any expression multiplied by 1 remains the same x4−1Rewrite the expression in exponential form (x2)2−12Use a2−b2=(a−b)(a+b) to factor the expression (x2−1)(x2+1)Solution More Steps Evaluate x2−1Rewrite the expression in exponential form x2−12Use a2−b2=(a−b)(a+b) to factor the expression (x−1)(x+1) (x−1)(x+1)(x2+1) Show Solution Find the roots x1=−1,x2=1 Evaluate (x×1)4−1To find the roots of the expression,set the expression equal to 0 (x×1)4−1=0Any expression multiplied by 1 remains the same x4−1=0Move the constant to the right-hand side and change its sign x4=0+1Removing 0 doesn't change the value,so remove it from the expression x4=1Take the root of both sides of the equation and remember to use both positive and negative roots x=±41Simplify the expression x=±1Separate the equation into 2 possible cases x=1x=−1Solution x1=−1,x2=1 Show Solution