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Beti Bachao, Beti Padhao (BBBP) is a personal campaign of the Government of India that aims to generate awareness and improve the efficiency of welfare services intended for girls.
In a school, a group of (x + y) teachers, (x2 + y2) girls and (x3 + y3) boys organised a campaign on Beti Bachao, Beti Padhao.
Q. Using part (D), find (x2 – y2) if x – y = 23.
  • a)
    200
  • b)
    330
  • c)
    120
  • d)
    230
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Beti Bachao, Beti Padhao (BBBP) is a personal campaign of the Governm...
Given x – y = 23
Also, x + y = 10
x2 – y2 = (x + y)(x – y)
= 10 × 23
= 230
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Beti Bachao, Beti Padhao (BBBP) is a personal campaign of the Government of India that aims to generate awareness and improve the efficiency of welfare services intended for girls.In a school, a group of (x + y) teachers, (x2 + y2) girls and (x3 + y3) boys organised a campaign on Beti Bachao, Beti Padhao.Q. Using part (D), find (x2 – y2) if x – y = 23.a)200b)330c)120d)230Correct answer is option 'D'. Can you explain this answer?
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