Question

(a - 1)³ + 2(a - 1)²​

Answer 1

Step-by-step explanation:

${(a - 1)}^{3} + 2 {(a - 1)}^{3} \\ {a}^{3} + 3 + 2( {a}^{2} - 2) \\ {a}^{3} + 3 + {2a}^{2} - 4 \\ \\ = {a}^{3} + {2a}^{2} - 1$

Hope it helps :)

Answer 2

Qᴜᴇꜱᴛɪᴏɴ :

❥ ( a - 1 ) ³ + 2 ( a - 1 ) ²

ᴀɴꜱᴡᴇʀ :

➯ ( a - 1 ) ³ + 2 ( a - 1 ) ²

⤍ a³ + 3 + 2 ( a ² - 2 )

⤍ a ³ + 3 + 2 a² - 4

= a³ + 2 a² - 1

Hope it helps uhh !!