同底次幂的乘法1:(-a)²a(-a^5)2:-2^11x2^6(-8)x323:3x10^4x10^6+10^3x10^6
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同底次幂的乘法1:(-a)²a(-a^5)2:-2^11x2^6(-8)x323:3x10^4x10^6+10^3x10^6
同底次幂的乘法
1:(-a)²a(-a^5)
2:-2^11x2^6(-8)x32
3:3x10^4x10^6+10^3x10^6
同底次幂的乘法1:(-a)²a(-a^5)2:-2^11x2^6(-8)x323:3x10^4x10^6+10^3x10^6
同底数幂相乘,底数不变,指数相加
1题:原式=(-a)²a(-a^5)
=a²×a×a^5×(-1)
=-1×a^(2+1+5)
= -a^8
2题:原式=-2^11×2^6(-8)×32
=(-2)^11×2^6×(-2)³×2^5
=[(-2)^11×(-2)³]×(2^6×2^5)
=(-2)^(11+3)×2^(6+5)
=(-2)^14×2^11
=2^14×2^11
=2^(14+11)
=2^25
3题:原式=3×10^4×10^6+10³×10^6
=3×10^(4+6)+10^(3+6)
=3×10^10+10^9
=10^9×(30+1)
=31×10^9
=3.1×10^10