Oblicz wartość wyrażenia (bez użycia kalkulatora)
a) √1472*62+1472*82
b) ∛ 216 · 12 + 216 · 8 +216 ·7
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a)
p[ 1472*62 + 1472*82] = p [ 1472*(62 + 82)] = p [1472*144] =
= p (1472)*p(144) = p( 64*23) *p(144) = p(64)*p(23)*p(144) =
= 8*12* p(23) = 96 p(23)
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1472 = 8*8*23 = 64*23
b)
p3st[ 216*12 + 216*8 + 216*7] = p3st [ 216*(12 + 8 + 7)] =
= p3st [ 216 *27] = p3st(216) * p3st(27) = 6*3 = 18
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p [ ... ] - pierwiastek kwadratowy z [ ... ]
p3st [ ...] - piewrwiastek 3 stopnia z [ ... ]