Question

Find the product using sutiable identity : (2x - y + 3z) (4x² + y² + 9z² + 2xy + 3yz - 6zx)​

Answer 1

Answer:

= identity used is: a³+b³+c³-3abc

= (2x-y-3z) [(2x)² + (-y)² + (-3z)² + (2x) (y) + (-y) (-3z) + (-3z) (-2x)]

= 2x³+(-y)³+(-3z)³-3abc