wartość wyrażenia √a-a²+a(a-3) dla a=9 wynosi ?
√a-a²+a(a-3) = √9 - 9² + 9 * (9 - 3) = 3 - 81 + 9 * 6 = - 78 + 54 = - 24
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√a-a²+a(a-3) = √9 - 9² + 9 * (9 - 3) = 3 - 81 + 9 * 6 = - 78 + 54 = - 24