(2又4分之1X10的2次幂)X(25X10的2次幂)2次幂X(-2X10的10次幂)2次幂
=[(9/4)X10²]X(25X10²)²X(-2X10^10)²
=[(225/100)X10²]X(25²X10^4)X(4X10^20)
=[(225/10²)X10²]X[25X25X4X10^(4+20)]
=225X[25X10²X10^24]
=225X25X10^(2+24)
=5625X10^26
=5.625X10^29
(2又4分之1X10的2次幂)X(25X10的2次幂)2次幂X(-2X10的10次幂)2次幂
=[(9/4)X10²]X(25X10²)²X(-2X10^10)²
=[(225/100)X10²]X(25²X10^4)X(4X10^20)
=[(225/10²)X10²]X[25X25X4X10^(4+20)]
=225X[25X10²X10^24]
=225X25X10^(2+24)
=5625X10^26
=5.625X10^29