Question

(891)² using identity 2​

Answer 1

Answer:

Hope this helps u.....

Answer 2

$\huge = > {(891)}^{2} \\ = > {(1000 - 109)}^{2} \\ = > { \{ 1000 - (100 + 9)\}}^{2} \\ = > { \{ {(1000)}^{2} + {(100 + 9)}^{2} - 2(1000)(100 + 9)\}}^{} \\ = > 1000000 + 10000 + 81 + 1800 - 2(100000 + 9000) \\ = > 1011881 - 2(109000) \\ = > 1011881 - 218000 \\ \\ \huge= > \pink{ 793881}$