Question

2 Find the product (a-b-c) (a²7b²tc²ab + bc-ca) without actual multiplication.​

Answer 1

Step-by-step explanation:

(a-b-c)(a^2+b^2+c^2-ab+bc-ca) is in the formula

of

(X+Y+z)(x²+y²+z²-xy-yz-xz) = x³+y³+z³-3xyz

SO,

by this (a - b -c) (X+Y+Z)

X = a

Y = -b

Z = -c

so the answer is (a)³+(-b)³+(-c)³-3(a)(-b)(-c)

=a³ - b³ - c³- 3abc

Hope it's Help you.