Question

simplify
$(3k - 4r - 2m) ^{2} - (3k + 4r - 2m) ^{2}$
​

Answer 1

Answer:

-48kr+32mr

Step-by-step explanation:

(3k-4r-2m)²-(3k+4r-2m)²

=>9k²+16r²+4m²-24kr-12km+16mr-(3k+4r-2m)²

=>9k²+16r²+4m²-24kr-12km+16mr-(9k²+16r²+4m²+24kr-12km-16mr)

=>9k²+16r²+4m²-24kr-12km+16mr-9k²-16r²-4m²-24kr+12km+16mr

=> 4m²-24kr-12km+16mr-4m²-24kr+12km+16mr

=>-24kr+16mr-24kr+16mr

=>-48kr+16mr+16mr

=>-48kr+32mr