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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