What is the value of $(a + b)^3 - a^3 - b^3 $ ?
Answer & explanation
Correct answer: option 3
$(a + b)^3 - a^3 - b^3 $
= a3 + b3 + 3ab(a+b) - $a^3 - b^3 $
= 3ab ( a + b)
What is the value of $(a + b)^3 - a^3 - b^3 $ ?
Correct answer: option 3
$(a + b)^3 - a^3 - b^3 $
= a3 + b3 + 3ab(a+b) - $a^3 - b^3 $
= 3ab ( a + b)