Question

lil123 would 7p^3r - 5t^3s - 31p^2r - 10s^3t^3 = 7p^2r(p - 3) 5t^2s(t-2s^2t)?

Answer 1

7p ^2r * p = 7p^3r
7p^2r * -3 = -21p^2r That is wrong

Answer 2

31 is a prime number so i would leave the numbers inside the bracket instead of outside

Answer 3

so have for the first bracket

Answer 4

p^2r(7p - 31)

Answer 5

i apologize the 31 is supposed to be 21

Answer 6

5t^2s(t-2s^2t)

that would be

5t^2s * t = 5t^3s which is correct
5t^2s * -2s^2t = 10s^3t^3 which is correct also

my bad your right

Answer 7

second equation should be

= -10s^3 t^3 my mistake