Question

please solve this question​

Answer 1

Answer:

$16x { }^{2} - 49y { }^{2} = (4x - 7y)(4x + 7y)$

Answer 2

$\sf \: 16 {x}^{2} - 49 {y}^{2} \\ \sf \implies \: ( {4x)}^{2} - ( {7y)}^{2} \\ \gray{ \sf \implies \: {a}^{2} - {b}^{2} = (a + b)(a - b)} \\ \\ \red {\sf \implies \: (4x + 7y)(4x - 7y)...}$

Thanks for supporting me in my previous answer !!