Answer:
a=
or 
Step-by-step explanation:
Equate the equation to zero
-9a+2=0
-5a-4a+2=0
5a(2a-1)-2(2a-1)=0
Write out the factors
(5a-2)(2a-1)=0
Then equate each factor to zero
5a-2=0 OR 2a-1=0
5a=2 OR 2a=1
a=
OR a= 
a=
or 
Answer:
21
Step-by-step explanation:
You have to multiply 3 and 7 to get 21.
Step-by-step explanation:
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Answer:

Step-by-step explanation:









Answer:
Step-by-step explanation:
