Question

make this sum fast please​

Answer 1

Answer:

$16 = {4}^{2}$

$({x}^{2} - 16) = ({x}^{2} - {4}^{2} )$

$({x}^{2} - {y}^{2} ) =( x + y)(x - y)$

$x = x$

$y = 4$

$( {x}^{2} - {4}^{2} ) = (x + 4)(x - 4)$

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Answer 2

Answer:

It is simple

${x}^{2} - 16$

On squaring both the sides