Question Factor the expression (X−2)(X+2) Evaluate X2−4Rewrite the expression in exponential form X2−22Solution (X−2)(X+2) Show Solution Find the roots X1=−2,X2=2 Evaluate X2−4To find the roots of the expression,set the expression equal to 0 X2−4=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=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
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