Problem: Add spaces: Hisresearchinvolvedstudyingthedistributionofquadraticresidues,andheinventednewmethodstoattackhisproblemsinvolvingcharactersumsandexponentialsums.

Spaces added: His research involved studying the distribution of quadratic residues, and he invented new methods to attack his problems involving character sums and exponential sums.
This text is missing some spaces, please add them: ((0,6)isthey-interceptsoc=6.
((0, 6) is the y-intercept so c = 6.
input question: Fix spacing: Morningtemperatureswillbearound13C.Duringthedaytheywillreachamaximumof19C.Lowtemperaturesatnightwillbearound9C.Westerlywindsareweak.

output answer: Morning temperatures will be around 13 C. During the day they will reach a maximum of 19 C. Low temperatures at night will be around 9C. Westerly winds are weak.
Problem: UnsureaboutwhichtypeofDASfileyouhave?Doyouwanttoknowexactlywhatitis,whocreatedit,andhowtoopenit?
What's a sentence that uses these characters?
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Unsure about which type of DAS file you have? Do you want to know exactly what it is, who created it, and how to open it?
Add spaces: BROKEN.Asa29year-oldevangelist,SverreRiksfjordfeltunequippedtofulfillhisministry.

Answer: BROKEN. As a 29 year-old evangelist, Sverre Riksfjord felt unequipped to fulfill his ministry.
This text is missing some spaces, please add them: Theprosecutionandthepolice,togetherwiththegovernment,comprisetheexecutivepower.
The prosecution and the police, together with the government, comprise the executive power.