Question

solve
(6x²-7y²)(6x²-7y²)
by using identity​

Answer 1

$(6x²-7y²)(6x²-7y²) = {(6x²-7y²)}^{2} \\ {(x - y)}^{2} = {x}^{2} + {y}^{2} - 2xy \\ = {(6 {x}^{2} )}^{2} + {(7 {y}^{2} )}^{2} - 2 \times 6 {x}^{2} \times 7 {y}^{2} \\ = 36 {x}^{4} + 49 {y}^{4} - 84 {x}^{2} {y}^{2}$

${\huge\mathcal{\fcolorbox{lime}{black}{\pink{FROM☞ ADESH \: KUMAR}}}}$