Math, asked by pallvi1253, 7 months ago

find the value of the given expressions, if l =1 , m = -1 and n = 0.
please explain step by step ​

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Answers

Answered by JoylynJohn
0

Answer:

Given

l = 1

m = -1

n = 0

1.  n² - 4m² + lm - m² - 2ml

= 0²  - 4× -1² + 1×-1 - 2× -1×1

= 0- 4×1 + -1 - 2×-1

= 0 - 4 - 1 + 2

= 0 - 5 +2

= -3

2.  2m² - 2n² -4 - m² +3

= 2× -1² - 2× 0² -4 - (-1)² +3

= 2× 1 - 0 -4 -1 +3

= 2-0 -2

=0

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