Add the following. l2 + m2, m2 + n2, n2 + l2, 2lm + 2mn + 2nl
Solution and Explanation
(l2 + m2) + (m2 + n2) + (n2 + l2) + (2lm + 2mn + 2nl)
= l2 + l2 + m2 + m2 + n2 + n2 + 2lm + 2mn + 2nl
= 2l2 + 2m2 + 2n2 + 2lm + 2mn + 2nl
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Underline the verbs and arrange them in two columns, Past and Earlier past.
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(d) By the time I returned, they had fallen asleep!
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