Question

please help guys im stuck in this​

Answer 1

Answer:

$1) \: \: {x}^{2} - \frac{25}{16} = {(x)}^{2} - { (\frac{5}{4} )}^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = (x - \frac{5}{4} )(x + \frac{5}{4} )$

$2)\: \:16 {x}^{2} - 9 = {4x)}^{2} - {(3)}^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: =( 4x + 3)(4x - 3)$