Question
અવયવ પાડો:
$8 x^3 + 125 y^3 + 343 - 210 x y$

Answer

આપેલ પદાવલિ $a^3 + b^3 + c^3 - 3abc$ ના સ્વરૂપમાં છે.
જ્યાં, $a = 2x$, $b = 5y$, $c = 7$.
નિત્યસમ: $a^3 + b^3 + c^3 - 3abc = (a + b + c)(a^2 + b^2 + c^2 - ab - bc - ca)$
તેથી, $(2x + 5y + 7)((2x)^2 + (5y)^2 + (7)^2 - (2x)(5y) - (5y)(7) - (7)(2x))$
$= (2x + 5y + 7)(4x^2 + 25y^2 + 49 - 10xy - 35y - 14x)$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free