${(6 x^{2} - 5 y)}^{2}$ Find square by identity.

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Solution

$(6 x^{2} - 5 y)^{2}$ by using $(a - b)^{2} = a^{2} - 2 a b + b^{2}$

$= 36 x^{4} + 25 y^{2} - 60 x^{2} y$

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