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THE

THOMAS SHERWIN, A. M.,

PRINCIPAL OF THE ENGLISH HIGH SCHOOL, BOSTON; AUTHOR OF
'ELEMENTARY TREATISE ON ALGEBRA.'

x2 + x4 = 12 3x2 + 4y = 336

x9=12

+x4 = 24 44+

+ху=

Entered according to Act of Congress, in the year 1845, by

THOMAS SHERWIN,

in the Clerk's Office of the District Court of the District of Massachusetts

1) Axy + y2 = 126
3(x + y) = 74
~ V2 + 472 = 181

-(x-4)=49

4X

3

2

2

43

3

336
40

STEREOTYPED AT THE

BOSTON TYPE AND STEREOTYPE FOUNDRY.