Question Simplify the expression 81x2z2−4z2 Evaluate 9x×9z2x−4z2Solution More Steps Evaluate 9x×9z2xMultiply the terms 81xz2xMultiply the terms 81x2z2 81x2z2−4z2 Show Solution Factor the expression z2(9x−2)(9x+2) Evaluate 9x×9z2x−4z2Evaluate More Steps Evaluate 9x×9z2xMultiply the terms 81xz2xMultiply the terms 81x2z2 81x2z2−4z2Factor out z2 from the expression z2(81x2−4)Solution More Steps Evaluate 81x2−4Rewrite the expression in exponential form (9x)2−22Use a2−b2=(a−b)(a+b) to factor the expression (9x−2)(9x+2) z2(9x−2)(9x+2) Show Solution
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