Expand using appropriate identity : (i) (5p
2
-2 )
2
(ii) (3p + 11)(3p - 11)
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Step-by-step explanation:
(ii) (3p+11)(3p-11)
We know that , (a+b)(a-b) = a²-b²
Therefore , (3p+11)(3p-11) = (3p)² - (11)²
= 9p² - 121
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