Question Simplify the expression x4−4 Evaluate (x2)2−4Multiply the exponents x2×2−4Solution x4−4 Show Solution Factor the expression (x2−2)(x2+2) Evaluate (x2)2−4Evaluate More Steps Evaluate (x2)2Multiply the exponents x2×2Multiply the numbers x4 x4−4Rewrite the expression in exponential form (x2)2−22Solution (x2−2)(x2+2) Show Solution Find the roots x1=−2,x2=2Alternative Form x1≈−1.414214,x2≈1.414214 Evaluate (x2)2−4To find the roots of the expression,set the expression equal to 0 (x2)2−4=0Evaluate the power More Steps Evaluate (x2)2Transform the expression x2×2Multiply the numbers x4 x4−4=0Move the constant to the right-hand side and change its sign x4=0+4Removing 0 doesn't change the value,so remove it from the expression x4=4Take the root of both sides of the equation and remember to use both positive and negative roots x=±44Simplify the expression More Steps Evaluate 44Write the number in exponential form with the base of 2 422Reduce the index of the radical and exponent with 2 2 x=±2Separate the equation into 2 possible cases x=2x=−2Solution x1=−2,x2=2Alternative Form x1≈−1.414214,x2≈1.414214 Show Solution