Question Factor the expression (x−7)(x+7) Evaluate x2−49Rewrite the expression in exponential form x2−72Solution (x−7)(x+7) Show Solution Find the roots x1=−7,x2=7 Evaluate x2−49To find the roots of the expression,set the expression equal to 0 x2−49=0Move the constant to the right-hand side and change its sign x2=0+49Removing 0 doesn't change the value,so remove it from the expression x2=49Take the root of both sides of the equation and remember to use both positive and negative roots x=±49Simplify the expression More Steps Evaluate 49Write the number in exponential form with the base of 7 72Reduce the index of the radical and exponent with 2 7 x=±7Separate the equation into 2 possible cases x=7x=−7Solution x1=−7,x2=7 Show Solution
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