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9x2 + 25 - 30x is the square of
  • a)
    3x – 5
  • b)
    – 3x – 5
  • c)
    3x + 5
  • d)
    -3x2 + 5
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
9x2 + 25 - 30x is the square ofa)3x – 5b)– 3x – 5c)3...
9x2 + 25 - 30x
= (3x)2 + (5)2 - 2 (3x) (5)
= (3x - 5)2
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Most Upvoted Answer
9x2 + 25 - 30x is the square ofa)3x – 5b)– 3x – 5c)3...
9x^2 + 25 - 30x
=9x^2 - 30x + 25
=(3x)^2 - 2(3x)(5) + (5)^2
=(3x - 5)^2
Free Test
Community Answer
9x2 + 25 - 30x is the square ofa)3x – 5b)– 3x – 5c)3...
9x2 + 25 - 30x
= (3x)2 + (5)2 - 2 (3x) (5)
= (3x - 5)2
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9x2 + 25 - 30x is the square ofa)3x – 5b)– 3x – 5c)3x + 5d)-3x2 + 5Correct answer is option 'A'. Can you explain this answer?
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