Math, asked by kuppasridevi, 3 months ago

Find (9m-2n)²
tell me fast ​

Answers

Answered by CrimsonQueen
14

81 {m}^{2}  - 36mn  + 4 {n}^{2}


TheDeadlyWasp: Great efforts...Sanaya must be appreciated...♥️...
CrimsonQueen: aisa kya kr diya
TheDeadlyWasp: sabke ans pe comment kr raha hu me.. hehehe
TheDeadlyWasp: world war 3 jeet liya.. xD
CrimsonQueen: mahan log...xD
TheDeadlyWasp: tumhe abhi pata chala
CrimsonQueen: nhi.. pta tha.... bohat pahle se...
TheDeadlyWasp: hnnn.. xD
CrimsonQueen: hm
Answered by karthikeya789
8

Step-by-step explanation:

as we know (a-b)²= a²+b²-2ab

9m²+(-2n)²-2(9m)(-2n)

81m+4n-18m×4n

63m+16n

Similar questions