SOLUTION: How do I solve for a? a^2-11a+28

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Question 23890: How do I solve for a?
a^2-11a+28
Found 2 solutions by Earlsdon, elima:
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Before you can "solve" this, it needs to be an "equation" rather than an "expression". Set your expression = 0 and try solving by factoring.
a%5E2-11a%2B28+=+0 Factor.
%28a-4%29%28a-7%29+=+0 Apply the zero product principle.
a-4+=+0 and/or a-7+=+0
If a-4+=+0 then a+=+4
If a-7+=+0 then a+=+7

Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
a^2-11a+28
First of all factor;
(a-7)(a-4)
Now solve each side fora;
a-7=0
a=7
a-4=0
a=4
So the answerwould be;
a=7 and a=4
=)