A^2-9a+20=a^2-5a-4a+20=(a^2-5a)+(-4a+20)
a^2-9a+20=a(a^2/a-5a/a)+(-4)(-4a/(-4)+20/(-4))
a^2-9a+20=a(a-5)-4(a-5)
a^2-9a+20=(a-5)[a(a-5)/(a-5)-4(a-5)/(a-5)]
a^2-9a+20=(a-5)(a-4)
Answer:
where is yr pic give full question please
Its solved already??any more questions just ask me:)
Answer:
1 is B
2 is B
3 is D
4 is C
Step-by-step explanation:
Dont care enough to explain all of them
