Six statements about polynomials are given. Select all the statements that are true. 7 x y 2 z + 12 x 3 y z 2 + x 12 + z is a 4 th degree polynomial. 12 a b 2 c 4 d + 19 a 4 b 2 − 11 b 3 c 5 d 2 has a leading coefficient of − 11 . x ( 3 y − 2 x y + 6 y ) is equivalent to y ( − 2 x 2 + 9 x ) . 2 r 4 + 23 r s t + 100 s 3 t 2 − 10 r 2 t has a leading term of 100 s 3 t 2 . 7 x − 2 x y − w + 2 x − 3 w has 5 terms. − 8 x + 8 x y − 9 + 12 x − 11 x y is equivalent to − 3 x y − 4 x − 9 .
