Question

Factorise m square plus 4n square plus 4mn minus 64

Answer 1

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your answer

m^2 + 4n^2 + 4mn - 64

( m + 2n )^2 - 64

( m +2n )^2 - ( 8)^2

a^2 - b^2 = ( a+b) ( a - b )

(m + 2n + 8 ) ( m + 2n - 8 )
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