Simplify:
$(7x\ -\ 6y)(6x\ -\ 7y)$

Given: $(7x\ -\ 6y)(6x\ -\ 7y)$

To do: Here we have to simplify the given expression $(7x\ -\ 6y)(6x\ -\ 7y)$.

Solution:

$(7x\ -\ 6y)(6x\ -\ 7y)$

$=\ 7x(6x\ -\ 7y)\ -\ 6y(6x\ -\ 7y)$

$=\ 42x^{2} \ -\ 49xy\ -\ 36xy\ -\ 42y^{2}$

$=\ \mathbf{42x^{2} \ -\ 85xy\ -\ 42y^{2}}$

So, answer is 42x^{2} \ -\ 85xy\ -\ 42y^{2}.

Tutorialspoint

Updated on: 10-Oct-2022

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