2.
а) 3а^4b2*25bc
75a^4b^3c
б) -12a^2b^5c*(c^2)^2*(-0,6)a^4
7,2a^6b^5c^5
3. 225a4b2 = 15a²b
4. 125a³b^6 = 5ab²
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Answers & Comments
2.
а) 3а^4b2*25bc
75a^4b^3c
б) -12a^2b^5c*(c^2)^2*(-0,6)a^4
7,2a^6b^5c^5
3. 225a4b2 = 15a²b
4. 125a³b^6 = 5ab²
б)-12a²b5c*(c²)²*(-0,6)a⁴=7,2a6b5c⁴(-12*(-0,6)= 7,2; a²* a⁴= a6; (c²)²=c⁴)
№3 225a⁴b²=(15a²b)² (15²=225; (a²)²=a⁴; b²=b²)
№4 125a³b6=(5ab²)³(5³=125; a³=a³; (b²)³=b6)