Indique o grau de cada monômio. a ) 22n
b ) 3,9x y 2
c ) 5abc
d ) 10 x 3
z 3
4x
e ) 1,4 x 9
f ) 1 __
7
a 2 b 5

Look, when you want to do something like put it like x^2. x2 could mean x² or x₂. so to clear confusion, know the notation. to find the product multiply the x's and you get -8x and the y's and you get 6y. since it's all being multiplied it is just -8x6y, or answer a. although the better answer is -48xy(combining -8 and 6) because you should multiply constants whenever you can.

Yup correct because it right