Question

divide: 5xy^7-10xy^5+25xy^3-5xy/-5xy
a. -y^6+2y^4–5y2^+1
b. -y^6+2y^4–5y^2
i cant determine which one.. since the last answer is 1 would i just cancel the one out ?

Answer 1

factorise the numerator

\[\frac{5xy(y^6 -2y^4 + 5y^2 -1)}{-5xy} = -(y^6 -2y^4 + 5y^2 -1)\]

multiply each term by -1

\[-y^6 + 2y^4 - 5y^2 + 1\]

Answer 2

so b?

Answer 3

i mean a?

Answer 4

nvm got it thanks :)

Answer 5

yes its a