Question

Expand. Your answer should be a polynomial in standard form. (3a^2 – 1)(-3a² + 5) =

Answer 1

Answer:-9a^4+18a^2-5

(3a  

2

−1)(−3a  

2

+5)

=3a  

2

(−3a  

2

+5)−1(−3a  

2

+5)

​  

​  

 

=−9a  

4

+15a  

2

+3a  

2

−5

=−9a  

4

+18a  

2

−5

​