QUES: Simplify the following expression giving your answers with positive exponents

correct the punctuation.

CORRECTED: Simplify the following expression, giving your answers with positive exponents:

QUES: Post a comment to pattern DROPS Extra 0941

correct the punctuation.

CORRECTED: Post a comment to pattern DROPS Extra 0-941

QUES: foreign scientific travels were indispensable for anyone in our restricted situation who wishes to develop into a man of science

correct the punctuation.

CORRECTED:
... foreign scientific travels [were] indispensable for anyone in our restricted situation who wishes to develop into a man of science.