Answer and explanation:
19.is 5th degree polynomial because the the ^ is 5 witch is a degree of 5 and there is four terms so its a polynomial
20 t will equal 49 because here is my work -16(4)^2+75(4)+5= -16(16)+300+5=-256+300+5=49
now here is some stuff to remember about 19
when ever you see something like 5x^2 its a 2nd degree monomial
when you see 5x^2+5 its a second degree binomial
when you see 6x^4+3x+2 its a 4th degree trinomial
but anything over 3 terms is a polynomial of what ever degree such as ^2 ^3 or even ^5 degree
Hope i helped you learn may i please have brainliest. Please ;)
