Expand the following
(2a-3b)³
Answers
Answered by
10
Heya!!
GOOD MORNING!
( a - b )³ = a³ - b³ - 3a²b + 3ab²
_______________________________
( 2a - 3b )³ =
2³ a³ - 3³ b³ - 3 2² a² × 3b + 3 ( 2a ) × 3² b²
=>
8a³ - 27b³ - 36a²b + 54ab²
_______________________________
GOOD MORNING!
( a - b )³ = a³ - b³ - 3a²b + 3ab²
_______________________________
( 2a - 3b )³ =
2³ a³ - 3³ b³ - 3 2² a² × 3b + 3 ( 2a ) × 3² b²
=>
8a³ - 27b³ - 36a²b + 54ab²
_______________________________
riyabharadwaz:
Good morning
Thank-you
wello! Have a g8 day ahead.
Same to you
thanks d'e.
Answered by
2
(2a)^3 - (3b)^3 - (3)(2a)(3b)(2a-3b)
8a^3 - 27b^3 - (18ab)(2a-3b)
8a^3 - 27b^3 - 36a^2 b +54ab^2
Similar questions