81m²–108mn+36n² factorise
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Answered by
8
=(9m)²-2*9m*6n+(6n)²
=(9n-6n)²
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=(9n-6n)²
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Answered by
4
81m^2=(9m)^2
36n^2=(6n)^2
108mn=2(9m)(6n)
=(9m)^2-2(9m)(6n)+(6n)^2
therefore,the following sum can be factorised as
(9m-6n)^2
=(9m-6n)(9m-6n)
36n^2=(6n)^2
108mn=2(9m)(6n)
=(9m)^2-2(9m)(6n)+(6n)^2
therefore,the following sum can be factorised as
(9m-6n)^2
=(9m-6n)(9m-6n)
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