Answer:

SOLUTION

= ( x + 4) (x -4 )

[ we know that ( a + b ) ( a -b ) = a² - b² ]

so , let's assume a= X and y as 4

= x² - 16

options c ) x² - 16

note : maybe there's a mistake in option c if then inform me so I can edit my answer as soon as possible

#CarryOnLearning

Answer:

c.x2-16

Step-by-step explanation:

=(x+4)(x-4)

=(x)(x)=x2 (4)(-4)=16

=x2-16

ps:

•When you multiply positive integer into negative integer the answer is negative.

•When you mumtiply both same sign integers(ex:positive × positive) the answer is positive.