數學題(2-12)

(-2 a^3 b^2)(5 a^4 b^6)
= (-10 a^3 b^2)(a^4 b^6)
= (-10 a^7 b^2)( b^6)
= -10 a^7 b^8
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(-3 a^2)(2 a)(-8 a^3)
= (-6 a^2)(a)(-8 a^3)
= (48 a^2)(a)(a^3)
= (48 a^3)(a^3)
= 48 a^6
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-2 y^6 / y^2
= -2 y^4
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54 x^8 / (9 x^3)
= 6 x^8 / (x^3)
= 6 x^5
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-24 a^5 / (-2 a^2)
= 12 a^5 / (a^2)
= 12 a^3
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做咁多先, 分開 post, 做埋比你, 太多啦
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豈有只做一半以用作霸頭位之理，枉為博士級的知識＋份子。---> 講得好!!!

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(-2 a^3 b^2)(5 a^4 b^6)

= (-10 a^3 b^2)(a^4 b^6)

= (-10 a^7 b^2)( b^6)

= -10 a^7 b^8

2.-10a^7b^8
3.48a^6
4.-2y^4
5.6x^5
6.12a^3
7.-7m^6n^3
8.-54d^3
9.t^(7x)
10.a^6b^8
11.15a^4b^3
12.u^4