Question

Factorise : i) 8x3 + y3 + 27z3 – 18xyz ii) 8x3 + 27y3 + 36x2 y + 54xy2

Answer 1

Step-by-step explanation:

here is your answer. do the next one in the same way

Answer 2

$\huge \bf \underline \red{answer}$

$i) \bf \green{8 {x}^{3} + {y}^{3} + 27 {z}^{3} - 18xyz}$

$\bf \green{8x^{3} + {y}^{3} + 27z ^{3} - 18xy \times 1}$

$\bf \green{8 {x}^{3} + y ^{3} + 27z^{2} - 18xy}$

$ii) \bf \blue{8x ^{3} + 27y ^{3} + 36 {x}^{2} y + 54xy ^{2} }$

yx(2x (2x + 3y)x 4x - 6xy + 9y) + 18 xyx (2x + 3y)

2x +3y x4x´- 6xy + 9y+

9y+18xy 18xy

(2x + 3y)= (4x² +12xy +9y2)

(2x + 3y) (2x + 3y)

(2x+3y)^2