Move 2 matches to make eleven squares

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,