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# Find the following squares by using the identities.(iii) (6x^2 -5y)^2

Q : 3      Find the following squares by using the identities.

(iii) $(6x^2-5y)^2$

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We use
$(a-b)^{2} = a^{2} - 2ab + b^{2}$
In this a = $6x^{2}$ and b = $5y^{2}$
$(6x-5y)^{2} = (6x)^{2} - 2(6x)(5y) + (5y)^{2}$
= $36x^{2} - 60xy + 25y^{2}$

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