Expand using identities : a) (3x – 4y + 4p)2
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Answers
Answered by
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Answer:
(3x−4y)
2
=(3x)
2
−2(3x)(4y)+(4y)
2
=9x
2
−24xy+16y
2
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Answered by
2
Answer:
Step-by-step explanation:
(3x - 4y + 4p)² =
Let 3x-4y = a
(a+4p ) ² = a² + (4p)² + 2×a×4p = a²+16p² + 8ap _ (a + b )² = a²+b²+2ab
putting values of a , we get
(3x - 4y)² + 16p² + 8(3x-4y)p
(3x)² + (4y)² - 2×3x×4y + 16p² +24xp - 32yp
9x² + 16y² - 24xy + 16p² + 24xp - 32yp
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