Jawabanmu

2014-08-13T22:16:03+07:00
hasil dari 2x^{3} . 7x^{4} . (3x)^{2}
=2x^{3} . 7x^{4} . 9x^{2}
= (2.7.9) (x^{3}.x^{4}.x^{2})
= 126x^{9}

keterangan : 
^ = pangkat
. = kali
2014-08-13T22:16:10+07:00
2x³ . 7x^4 . (3x)²
= 14x^7 . 9x²
= 126x^9