Question

Factorise = x square/ 16 -729

Answer 1

Answer:

$(\frac{x}{4} +27)(\frac{x}{4} - 27)$

Step-by-step explanation:

= $\frac{x^{2} }{16} - 729$

= $\frac{(x)^{2} }{(4)^{2} } - (27)^{2}$      ( $a^{2} - b^{2} = (a+b)(a-b)$ )

= $(\frac{x}{4})^{2} - 27^{2}$

= $(\frac{x}{4} +27)(\frac{x}{4} - 27)$