Use a sum or difference identity to find the exact value.tan 
A. - 2 - 
B. - 2 + 
C. 2 + 
D. 2 - 
Answer: D
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Which property or identity justifies the statement?If src="https://sciemce.com/media/4/ppg__tttt0615190958__f1q47g7.jpg" style="vertical-align: -17.0px;" />.
A. Distributive Identity
B. Density Property
C. Transitive Property
D. Multiplication Property
< 
and 
< 0, then 
? 
> 
?
Identify the degree of the polynomial; then indicate whether the polynomial is a monomial, binomial, or trinomial or has no special polynomial name.5r2 + 5r - 7r5
A. degree = 6; binomial B. degree = 2; trinomial C. degree = 5; binomial D. degree = 5; trinomial
Multiply.(0.8a + b)( 2.1a2 - 4.5b)
A. 1.68a3 + 2.1ab - 3.6a2b - 4.5b B. 1.68a3 + 2.1a2 b2 - 3.6ab - 4.5b2 C. 1.68a3 + 2.1a2 b - 3.6ab - 4.5b2 D. 1.68a3 + 2.1a2 b - 4.5ab - 4.5b2
Rewrite the sum as a rational function S(n).
?
?
A. 
B. 
C. 
D. 
E. 