a square + 4 is equal to 4 a
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a= 2
as 2*2+4=8
4*2=8
therefore the value of a is 2
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Answered by
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a^2+4 = 4a
a^2 - 4a + 4=0
a^2 - 2a - 2a +4= 0
a ( a-2 ) -2 (a-2)=0
(a-2) (a-2) = 0
a - 2 =0. ,a - 2 =0
a= 2 , a=2
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