Question

simplify (x+1)^3-(x-1)^3

Answer 1

Hello friends!!

Here is your answer :

${(x + 1)}^{3} - {(x - 1)}^{3}$


Using identity : ( a + b)³ = a³ + b³ + 3ab(a + b)



${(x)}^{3} + {(1)}^{3} + 3(x)(1)(x + 1) - ( {(x)}^{3} - {(1)}^{3} + 3(x)( - 1)( x - 1))$


${x}^{3} + 1 + 3 {x}^{2} + 3x - ( {x}^{3} - 1 - 3 {x}^{2} + 3x)$


${x}^{3} + 1 + 3 {x}^{2} + 3x - {x}^{3} + 1 + 3 {x}^{2} - 3x$


$2 + 6 {x}^{2}$

$6 {x}^{2} + 2$


Hope it helps you.. ☺️☺️☺️

Answer 2

Answer:

answer is 6 x^2 + 2