286 . x2+y2-64=0 সমীকরণটির লেখচিত্র কোনটি?

  • A. বৃত্ত
  • B. সরলরেখা
  • C. উপবৃত্ত
  • D. গোলকীয়
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290 . (x-y)(x+y)/x2-y2= কত?

  • A. x/y
  • B. 1
  • C. y/x
  • D. ০
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293 . (x+y)=3 এবং x2+y2=4 হলে x2+y2 এর মান কত?

  • A. ২৭
  • B. ৮
  • C. ৩৭
  • D. কোনটিই নয়
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295 . If y=3x and z =2y, then in terms of x, x+y+z=

  • A. 10x
  • B. 9x
  • C. 8x
  • D. 7x
  • E. 6x
  • F. 5x
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298 . যদি (x+y) + xy= ১ হয় , তাহলে y=?

  • A. x/(x-১)
  • B. x/(x+1)
  • C. (x-১)/x
  • D. (x+১)/x
  • E. x
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