N°4
а ) (1/4)²×а² б ² = 1/16 а²б²
б) (-2)³×а³ = -8 а ³
N° 5
a) 3⁷×(3²)³:3¹⁰ = 3⁷× 3⁶÷3¹⁰ = 3³ = 27
б) 9⁴/3³ = 3⁸/3³ = 3⁵ = 243
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Answers & Comments
N°4
а ) (1/4)²×а² б ² = 1/16 а²б²
б) (-2)³×а³ = -8 а ³
N° 5
a) 3⁷×(3²)³:3¹⁰ = 3⁷× 3⁶÷3¹⁰ = 3³ = 27
б) 9⁴/3³ = 3⁸/3³ = 3⁵ = 243