Question

write in expanded from (-2L+m-8n)^2​

Answer 1

Answer:

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Answer 2

Answer:

= 4l² - 41m + 32ln + m² - 16mn +64n²

Step-by-step explanation:

Using the identity :

a²+b²+c²+2ab+2bc+2ca

= a : -2l. b : m. c : -8n

= ( -21 )² + ( m )² + ( -8n )² + 2(-21)(m) + 2(m)(-8n) + 2(-8n)(-21)

= 4l² - 41m + 32ln + m² - 16mn + 64n²

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