Question

(l+m)² -4lm (Hint: Expand (l + m)² first)
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Answer 1

Answer:

l² + m² - 2lm

Step-by-step explanation:

( l + m )² = l² + m² + 2lm

( l + m )² - 41m

= l² + m² + 2lm - 41 lm

= l² + m² - 2lm

Answer 2

Answer:

I hope you understood okkk