Melchoredzelviz
Answered

(21x^4-13y^3) (21x^4-13y^6) 
Please help me to answer dis !!!
Thanks everyone

Sagot :

Lanchuiviz
441x^8-273x^4y^6-273x^4y^6+169y^12=441x^8-546x^4y^6+169y^12 is the answer if it is -y^6(if and only if there's typo error in your given)
414x^8-273x^4y^6-273x^4y^3+169y^9 is my answer kung ganun pa rin po yung kanina na ibinigay niyo po.