if a minus b equal to 1 then a cube minus b cube minus 3 is equal to
Answers
Answered by
6
a-b=1
CUBEING BOTH SIDES
(a+b)^3=1^3
a^3-3a²b+3ab²-b^3=1
a^3-b^3=1+3a²b-3ab²
ACCORDING TO QUESTION
a^3-b^3-3=1+3a²b-3ab²-3
a^3-b^3-3= -2+3a²b-3ab²
CUBEING BOTH SIDES
(a+b)^3=1^3
a^3-3a²b+3ab²-b^3=1
a^3-b^3=1+3a²b-3ab²
ACCORDING TO QUESTION
a^3-b^3-3=1+3a²b-3ab²-3
a^3-b^3-3= -2+3a²b-3ab²
Similar questions