Question n2−4 Factor the expression (n−2)(n+2) Evaluate n2−4Rewrite the expression in exponential form n2−22Solution (n−2)(n+2) Show Solution Find the roots n1=−2,n2=2 Evaluate n2−4To find the roots of the expression,set the expression equal to 0 n2−4=0Move the constant to the right-hand side and change its sign n2=0+4Removing 0 doesn't change the value,so remove it from the expression n2=4Take the root of both sides of the equation and remember to use both positive and negative roots n=±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 n=±2Separate the equation into 2 possible cases n=2n=−2Solution n1=−2,n2=2 Show Solution
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