show that( 3p + 7)²-84p=(3p-7)²
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Answered by
10
Answer:
Step-by-step explanation:
( 3p + 7 )² - 84p = ( 3p - 7 )²
9p² + 49 + 42p - 84p = 9p² + 49 - 42p
9p² + 49 - 42p = 9p² + 49 - 42p
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Answered by
4
LHS ⇒ (3p + 7)² - 84p
= 9p² + 49 + 42p - 84p
= 9p² - 42p + 49
RHS⇒ (3p - 7)²
= 9p² - 42p + 49
Hence, LHS = RHS.
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