the required expression is 25x2 - 36 and 1-16x2.
What are inequality?
It can be define as the link of equation contains the sign of ( ≤, ≥, <, >) instead of equal sign in an equation.
since,
25x2 - 36 = [tex]25x^2 - 36[/tex] 49x2 + 4 is not correct because it has sum
= (5x)^2- 6^2 sign thats why its is incorrect
=[tex](5x)^2- 6^2[/tex]
1-16x2
= 1^2- (4x)^2
= [tex]1^2- (4x)^2[/tex]
Thus from above the expressions represent a difference of squares
25x2 - 36 and 1-16x2.
Learn more about inequality here:
brainly.com/question/14098842
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