Answer:
Polynomials are closed under addition. When subtracting polynomials, the variables and their exponents do not change. Only their coefficients will possibly change. This guarantees that the difference has variables and exponents which are already classified as belonging to polynomials.
Step-by-step explanation:
They are adjacent because he share a vertex and a common side, and x=15° because 90°/(2+4)= 15
3 x 3 = 9 i hope that helps
In active voice sentences the subject does the action im pretty sure
in a passive voice its receiving an action
Good Luck
hope i helped!!!!!!!!!!! <span />
