SOLUTION: i need help on the problem -10a(2-a)

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Question 50248: i need help on the problem -10a(2-a)
Found 2 solutions by stanbon, tutorcecilia:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
10a(2-a)
=20a-10a^2
Cheers,
Stan H.

Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
-10a(2-a) [Multiply by distributing (-10a) amongst all terms]
(-10a)(2) - (-10a)(a)
-20a-(-10a^2)
-20a+10a^2