Question

Find the volume of cuboid whose dimension are (X2-2) (2x+2)(x-1)

Answer 1

Volume of vinod=labh
$v = ( {x}^{2} - 2)(2x + 2)(x - 1) \\ = ( {x}^{2} - 2)2(x + 1)(x - 1) \\ = ( {x}^{2} - 2)2( {x}^{2} - 1) \\ = 2( { x}^{2} - 2)( {x}^{2} - 1) \\ = 2( {x}^{4} - {x}^{2} - 2 {x}^{2} + 2) \\ = 2( {x}^{4} - 3 {x}^{2} + 2) cu unit$