Question

Factor completely: 21x^3y^4 + 15x2y2 − 12xy^3

3xy(7x2y3 + 5x − 4y)

3xy(7x2y + 5x − 4y^2)

3xy^2(7x^2y + 5x − 4y)

3xy^2(7x^2y^2 + 5x − 4y)

Answer 1

what is the lowest power of x and y?
what is the greatest common divisor of 21, 15 and 12?
once you get these, you factor them!

Answer 2

idk?

Answer 3

you have
\[ \LARGE 21x^3y^4+12x^2y^2-12xy^3 \]
what is the lowest power of x and y?

Answer 4

2?

Answer 5

this is the lowest power of y!
what about x?

Answer 6

1?

Answer 7

great this mean you can factor
\[ \LARGE xy^2 \]
from the expresion!
what is the greatest common divisor of the coefficients?

Answer 8

umm....im confused agin.

Answer 9

sorry.

Answer 10

21x^3y^4 + 15x2y2 − 12xy^3=
3xy^2( 7 x^2 y^2 + 5 x - 4 y)
4th choice

Answer 11

thank you..!