The missing factor is (a -1) I believe. If you foil (5a + 9)(a - 1) you would get 5a^2 + 4a - 9.
Answer:
A
Step-by-step explanation:
hope this helped! please let me know if im wrong
D, because the will not intersect i believe
3a plus 7. you group the whole numbers together and than the a's. so 3+4 is 7. 2a + a is 3a.
Hello,
g_m(15,1215)=√(5*1215)=9√15≈77,942286340....
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