\fdO'^ - Old Forge Coal Mines

ALGEBRA.
(QUESTIONS 218-257.)
(218) {a) According to Art. 628, .arl expressed radically
is V^;
Zx^y'^ expressed radically is 3 \/xy-* ;
3^^ Jo-l _ 3^;fjj/-V, since s' = -cl Ans.
3^4
*' 1 . .1 a c
a c' {a -{- d)
in — n b*
{c) ^'=:x\ Ans. ^' = x'\ Ans.
{{/^^y = i^^^'^y = b'^xK Ans.
'
Ans.
(219) 3i/^=i/l89. Ans. (Art. 542.)
d'b'/Ifc = \/ a*b'c . Ans. %x\G = \/^a'\ Ans.
(220)
Let ;r = the length of the post.
X
Then, — = the amount in the earth.
^x = -jr- the amount in the water.
^i.±- + 13 = x.
Itx + 15.r + 455 = 35^:.
- 13.t' = - 455.
;f = 35 feet. Ans.
In order to transform this formula so that /, may stand
alone in the first member, we must first clear of fractions.
Clearing of fractions, we have