(ii) 2 l
+3m + 4n by 51 - 6m - 4n
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Answer:
51²+ 25ln
Step-by-step explanation:
Subtract 3l(l−4m+5n) from 4l(10n−3m+2l)
=4l(10n−3m+2l)−3l(l−4m+5n)
=(40ln−12lm+8l² )−(3l² −12lm+15ln)
=40ln−12lm+8l² −3l ² +12lm−15ln
=25ln+5l²
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