Answer:3 hour
Step-by-step explanation:
Hope that helps
Answer:
x = ± 
Step-by-step explanation:
3x² + 7 = 28 ( subtract 7 from both sides )
3x² = 21 ( divide both sides by 3 )
x² = 7 ( take square root of both sides )
x = ± 
that is x = -
, x = 
the answer would be -8<x<2
Yes, this is a polynomial, but a special form of a polynomial with just one term which is called a monomial .
Im not 100% about how this question is explained or written but i think its 8