Question

125-8x3-27y3-90xy factories​

Answer 1

$\huge\bold\green{Ms~Coward}$

Use identity :-

a³ + b³ + c³ - 3abc = ( a + b + c) ³

=> ( a² + b² + c² - ab - bc - ca)

125 - 8x³ - 27y³ - 90xy

(5) ³ - (2x) ³ - (3y) ³ - 3 × 5 × 2x × 3y

[ 5 (-2x) + (-3y) ] [ (5) ² + (-2x) ² + (-3y) ² - (5 × -2x) - (-2x × -3y) - (-3z × 5 ) ]

( 5 - 2x - 3y ) ( 25 + 4x² + 9y² + 10x - 6xy + 15z )