Question

Factorise the following (i)x3+ 9x2+27x+54
(ii) 2x2+y2+8z2-√2xy+4√2yz-8xz

Answer 1

Correct question;

${x}^{3} + 9 {x}^{2} + 6x + 54 \\ 2 {x}^{2} + {y}^{2} + 8 {z}^{2} - 2\sqrt{2} xy + 4 \sqrt{2} yz - 8xz$

Refer the attachment for answer.