Question

343x^2-729y^3 by using identityl ​

Answer 1

Step-by-step explanation:

$343x^3-729y^3 \\ = ( {7x)}^{3} - (9 {y})^{3} \\ = (7x - 9y)(49 {x}^{2} + 63xy + 81 {y}^{2} )$