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National Association For The Blind (NAB) aimed to empower and well-inform visually challenged population of our country, thus enabling them to lead a life of dignity and productivity.
Ravi donated to NAB. When his cousin asks to tell the amount donated by him, he just gave the below hint.
Q. (x + a)(x + b) = x2 + ................ x + ab
  • a)
    a + b
  • b)
    ab
  • c)
    a – b
  • d)
    a/b
Correct answer is option 'A'. Can you explain this answer?
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National Association For The Blind (NAB) aimed to empower and well-in...
(x + a)(x + b) = x2 + (a + b)x + ab
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National Association For The Blind (NAB) aimed to empower and well-inform visually challenged population of our country, thus enabling them to lead a life of dignity and productivity.Ravi donated to NAB. When his cousin asks to tell the amount donated by him, he just gave the below hint.Q. (x + a)(x + b) = x2 + ................ x + aba)a + bb)abc)a – bd)a/bCorrect answer is option 'A'. Can you explain this answer?
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