Question Simplify the expression 4−x2 Evaluate 4−1×x2Solution 4−x2 Show Solution Factor the expression (2−x)(2+x) Evaluate 4−1×x2Any expression multiplied by 1 remains the same 4−x2Rewrite the expression in exponential form 22−x2Solution (2−x)(2+x) Show Solution Find the roots x1=−2,x2=2 Evaluate 4−1×x2To find the roots of the expression,set the expression equal to 0 4−1×x2=0Any expression multiplied by 1 remains the same 4−x2=0Move the constant to the right-hand side and change its sign −x2=0−4Removing 0 doesn't change the value,so remove it from the expression −x2=−4Change the signs on both sides of the equation x2=4Take the root of both sides of the equation and remember to use both positive and negative roots x=±4Simplify the expression More Steps Evaluate 4Write the number in exponential form with the base of 2 22Reduce the index of the radical and exponent with 2 2 x=±2Separate the equation into 2 possible cases x=2x=−2Solution x1=−2,x2=2 Show Solution