Question

expand (2a-3b-4c)^2


solve it plz its urgent​

Answer 1

Step-by-step explanation:

hope this answer will satisfy you

Answer 2

Answer:

4a²+ 9b² + 16c² - 12ab + 24bc - 16ac

Step-by-step explanation:

as we know that according to algabraic identities,

(a-b-c )² = a²+b²+c² - (2 x a x b )+ (2 x b x c) - (2 x a x c)

then,

= (2a)²+(3b)²+(4c)² - (2 x 2a x 3b) + (2 x 3b x 4c) - (2x 2a x 4c)

= 4a²+ 9b²+16c²-12ab+24bc-16ac