x2+x-(a+1)(a+2) কে উৎপাদকে বিশ্লেষণ করুন।
সমাধান
সঠিক উত্তর: Option C
x2 + x - (a + 1)(a + 2)
= x2 + x - (a + 1)(a + 1 + 1)
= x2 + x - p(p + 1) [a+1=p ধরে ]
= x2 + x - p2 - p
= x2 - p2 + x - p
= x2 + x - (a + 1)(a + 1 + 1)
= x2 + x - p(p + 1) [a+1=p ধরে ]
= x2 + x - p2 - p
= x2 - p2 + x - p
= (x + p)(x - p) + 1(x - p)
= (x - p)(x + p + 1)
= (x - a - 1)(x + a + 1 + 1)
= (x - a - 1)(x + a + 2)
= (x - p)(x + p + 1)
= (x - a - 1)(x + a + 1 + 1)
= (x - a - 1)(x + a + 2)
